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FTIR Study of Competitive Water-Arene Sorption on Tetramethylammonium- and Trimethylphenylammonium-Montmorillonites
- Jeffrey J. Stevens, Sharon J. Anderson, Stephen A. Boyd
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- Clays and Clay Minerals / Volume 44 / Issue 1 / February 1996
- Published online by Cambridge University Press:
- 28 February 2024, pp. 88-95
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Montmorillonites saturated with small quaternary alkylammonium ions such as tetramethyl-ammonium (TMA) or trimethylphenylammonium (TMPA) are excellent sorbents for aromatic pollutants. In some cases, water inhibits arene sorption, but the inhibition mechanism is not understood completely. The objectives of this study were to determine whether arenes interact with adsorbed TMA and TMPA ions and/or with siloxane surfaces, and how water affects these interactions. We reacted benzene and ethylbenzene vapors with normal- and reduced-charge TMA- and TMPA-montmorillonite films at several relative humidities, and obtained infrared spectra of the resulting sorbate-clay complexes. Arene sorption caused the methyl asymmetric deformation vibrations adsorbed TMA and TMPA to shift to lower wave-number, whereas water sorption caused shifts to higher wavenumber. In the absence of water, benzene and ethylbenzene adsorbed on the siloxane surface as well as interacted directly with TMA and TMPA ions. The proportion of TMA and TMPA ions that interacted with benzene and ethylbenzene was greater for reduced-charge than normal-charge montmorillonite. Comparison of the HOH deformation and cation methyl asymmetric deformation vibrations indicated that both benzene and ethylbenzene inhibited water sorption substantially, and that water more readily displaced benzene and ethylbenzene from TMA and TMPA ions than from siloxane surfaces. Water inhibited arene sorption mainly by hydrating exchangeable cations, thereby obscuring siloxane surfaces adjacent to adsorbed TMA and TMPA ions and decreasing the average pore dimensions. These results indicate that in the presence of bulk water, arene adsorption likely occurs primarily on the siloxane surface.
An FTIR Study of Water Sorption on TMA- and TMPA-Montmorillonites
- Jeffrey J. Stevens, Sharon J. Anderson
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- Clays and Clay Minerals / Volume 44 / Issue 1 / February 1996
- Published online by Cambridge University Press:
- 28 February 2024, pp. 142-150
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Water inhibits sorption of uncharged organic compounds on montmorillonites saturated with small alkylammonium cations such as tetramethylammonium (TMA) and trimethylphenylammonium (TMPA). As a first step toward understanding the mechanism by which water inhibits arene sorption on TMA- and TMPA-montmorillonites, infrared spectroscopy and water sorption isotherm experiments were conducted to determine whether water preferentially hydrates adsorbed TMA and TMPA cations rather than the siloxane surface. Infrared spectra of normal-charge and reduced-charge TMA- and TMPA-montmorillonites were obtained at partial water vapor pressures from 0.075 to 0.92 to determine if water vapor hydrates the adsorbed cations. Water adsorbed at partial pressures from 0 to about 0.2 caused the wave-number position of the HOH deformation vibration of adsorbed water to shift 4 to 10 cm-1 to higher wavenumber and the methyl deformation vibrations of adsorbed TMA and TMPA cations to shift 1 to 2 cm-1 to higher wavenumber, providing evidence that water interacts directly with adsorbed TMA and TMPA ions. There were no shifts in the ring stretching or C-H out-of-plane vibrations of TMPA, which indicates that water interacts with the methyl groups of TMPA, not with TMPA's aromatic ring. Water vapor sorption isotherms showed that normal-charge montmorillonites adsorb more water than do reduced-charge montmorillonites, consistent with the higher concentration of adsorbed cations on normal-charge clay. More water was adsorbed by TMA-montmorillonite than by TMPA-montmorillonite, consistent with the higher hydration energy of TMA. Thus, both the infrared and sorption isotherm results show that water preferentially hydrates adsorbed TMA and TMPA, not the siloxane surface of montmorillonite.
Orientation of Trimethylphenylammonium (TMPA) on Wyoming Montmorillonite: Implications for Sorption of Aromatic Compounds
- Jeffrey J. Stevens, Sharon J. Anderson
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- Journal:
- Clays and Clay Minerals / Volume 44 / Issue 1 / February 1996
- Published online by Cambridge University Press:
- 28 February 2024, pp. 132-141
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The orientation of TMPA cations on montmorillonite affects the adsorbate-accessible siloxane surface area and determines whether the TMPA phenyl ring can interact with other aromatic adsorbates by π-π interactions. The purpose of this study was to determine the orientation of TMPA ions in the interlayer of normal-charge and reduced-charge Wyoming montmorillonite. The orientation of TMPA's phenyl group was investigated using infrared dichroism of selected aromatic ring vibrations. X-ray diffraction (XRD) and MacEwan Fourier transforms were used to determine interlayer spacings and to ascertain whether reduced-charge Wyoming montmorillonite is a randomly interstratified mixture of layers with two different d-spacings. For normal-charge montmorillonite, the infrared results showed that the C-N bond axis is neither perpendicular nor parallel to the surface, yet X-ray data suggested that the TMPA phenyl ring is perpendicular or nearly perpendicular to the siloxane surface. In this orientation, the average adsorbate-accessible space between adjacent TMPA ions is 24 Å2, or about 1/3 of the total surface. When the phenyl ring of TMPA is perpendicular to the clay surface, aromatic compounds should be able to interact with TMPA's aromatic ring by π-π interactions, while polar compounds such as water can interact with positively charged nitrogen atom. The reduced-charge montmorillonite used in this study is a randomly interstratified mixture of about 25% collapsed layers with no adsorbed cations and 75% expanded layers that are propped open by TMPA's methyl groups, not by the aromatic ring. The adsorbate-accessible surface area on expanded layers of reduced-charge montmorillonite is 1.5 to 2 times that on normal-charge TMPA-clay, depending on the orientation of TMPA's aromatic ring.
Expert Consensus Statement: Anatomy, Imaging, and Nomenclature of Congenital Aortic Root Malformations
- Justin T. Tretter, Diane E. Spicer, Rodney C. G. Franklin, Marie J. Béland, Vera D. Aiello, Andrew C. Cook, Adrian Crucean, Rohit S. Loomba, Shi-Joon Yoo, James A. Quintessenza, Christo I. Tchervenkov, Jeffrey P. Jacobs, Hani K. Najm, Robert H. Anderson
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- Journal:
- Cardiology in the Young / Volume 33 / Issue 7 / July 2023
- Published online by Cambridge University Press:
- 08 June 2023, pp. 1060-1068
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Over the past 2 decades, several categorizations have been proposed for the abnormalities of the aortic root. These schemes have mostly been devoid of input from specialists of congenital cardiac disease. The aim of this review is to provide a classification, from the perspective of these specialists, based on an understanding of normal and abnormal morphogenesis and anatomy, with emphasis placed on the features of clinical and surgical relevance. We contend that the description of the congenitally malformed aortic root is simplified when approached in a fashion that recognizes the normal root to be made up of 3 leaflets, supported by their own sinuses, with the sinuses themselves separated by the interleaflet triangles. The malformed root, usually found in the setting of 3 sinuses, can also be found with 2 sinuses, and very rarely with 4 sinuses. This permits description of trisinuate, bisinuate, and quadrisinuate variants, respectively. This feature then provides the basis for classification of the anatomical and functional number of leaflets present. By offering standardized terms and definitions, we submit that our classification will be suitable for those working in all cardiac specialties, whether pediatric or adult. It is of equal value in the settings of acquired or congenital cardiac disease. Our recommendations will serve to amend and/or add to the existing International Paediatric and Congenital Cardiac Code, along with the Eleventh iteration of the International Classification of Diseases provided by the World Health Organization.
Lodewyk H.S. van Mierop (March 31, 1927–October 17, 2021): a true giant
- Robert H. Anderson, Mark S. Bleiweis, F.J. Fricker, Arwa Saidi, Arun Chandran, James C. Fudge, Dipankar Gupta, Giles J. Peek, Diane E. Spicer, Jeffrey P. Jacobs
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- Journal:
- Cardiology in the Young / Volume 32 / Issue 4 / April 2022
- Published online by Cambridge University Press:
- 02 May 2022, pp. 514-524
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We honour a great man and a true giant. Lodewyk H.S. van Mierop (March 31, 1927 – October 17, 2021), known as Bob, was not only a Paediatric Cardiologist but also a dedicated Scientist. He made many significant and ground-breaking contributions to the fields of cardiac anatomy and embryology. He was devoted as a teacher, spending many hours with medical students, Residents, and Fellows, all of whom appreciated his regularly scheduled educational sessions. Those of us who were fortunate to know and spend time with him will always remember his great mind, his willingness to share his knowledge, and his ability to encourage spirited and fruitful discussions. His life was most productive, and he will long be remembered by many through his awesome and exemplary scientific contributions.
His legacy continues to influence the current and future generations of surgeons and all providers of paediatric and congenital cardiac care through the invaluable archive he established at University of Florida in Gainesville: The University of Florida van Mierop Heart Archive. Undoubtedly, with these extraordinary contributions to the fields of cardiac anatomy and embryology, which were way ahead of his time, Professor van Mierop was a true giant in Paediatric Cardiology. The invaluable archive he established at University of Florida in Gainesville, The University of Florida van Mierop Heart Archive, has been instrumental in teaching medical students, Residents, Medical Fellows, and Surgical Fellows. Only a handful of similar archives exist across the globe, and these archives are the true legacy of giants such as Dr. van Mierop. We have an important obligation to leave no stone unturned to continue to preserve these archives for the future generations of surgeons, physicians, all providers of paediatric and congenital cardiac care, and, most importantly, our patients.
Evolution of severe acute respiratory coronavirus virus 2 (SARS-CoV-2) seroprevalence among employees of a US academic children’s hospital during coronavirus disease 2019 (COVID-19) pandemic
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- Brian T. Fisher, Anna Sharova, Craig L. K. Boge, Sigrid Gouma, Audrey Kamrin, Jesse Blumenstock, Sydney Shuster, Lauren Gianchetti, Danielle Collins, Elikplim Akaho, Madison E. Weirick, Christopher M. McAllister, Marcus J. Bolton, Claudia P. Arevalo, Eileen C. Goodwin, Elizabeth M. Anderson, Shannon R. Christensen, Fran Balamuth, Audrey R. Odom John, Yun Li, Susan Coffin, Jeffrey S. Gerber, Scott E. Hensley
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- Journal:
- Infection Control & Hospital Epidemiology / Volume 43 / Issue 11 / November 2022
- Published online by Cambridge University Press:
- 02 December 2021, pp. 1647-1655
- Print publication:
- November 2022
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Objective:
To describe the cumulative seroprevalence of severe acute respiratory coronavirus virus 2 (SARS-CoV-2) antibodies during the coronavirus disease 2019 (COVID-19) pandemic among employees of a large pediatric healthcare system.
Design, setting, and participants:Prospective observational cohort study open to adult employees at the Children’s Hospital of Philadelphia, conducted April 20–December 17, 2020.
Methods:Employees were recruited starting with high-risk exposure groups, utilizing e-mails, flyers, and announcements at virtual town hall meetings. At baseline, 1 month, 2 months, and 6 months, participants reported occupational and community exposures and gave a blood sample for SARS-CoV-2 antibody measurement by enzyme-linked immunosorbent assays (ELISAs). A post hoc Cox proportional hazards regression model was performed to identify factors associated with increased risk for seropositivity.
Results:In total, 1,740 employees were enrolled. At 6 months, the cumulative seroprevalence was 5.3%, which was below estimated community point seroprevalence. Seroprevalence was 5.8% among employees who provided direct care and was 3.4% among employees who did not perform direct patient care. Most participants who were seropositive at baseline remained positive at follow-up assessments. In a post hoc analysis, direct patient care (hazard ratio [HR], 1.95; 95% confidence interval [CI], 1.03–3.68), Black race (HR, 2.70; 95% CI, 1.24–5.87), and exposure to a confirmed case in a nonhealthcare setting (HR, 4.32; 95% CI, 2.71–6.88) were associated with statistically significant increased risk for seropositivity.
Conclusions:Employee SARS-CoV-2 seroprevalence rates remained below the point-prevalence rates of the surrounding community. Provision of direct patient care, Black race, and exposure to a confirmed case in a nonhealthcare setting conferred increased risk. These data can inform occupational protection measures to maximize protection of employees within the workplace during future COVID-19 waves or other epidemics.
Registry-based trials: a potential model for cost savings?
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- Brett R. Anderson, Evelyn G. Gotlieb, Kevin Hill, Kimberly E. McHugh, Mark A. Scheurer, Carlos M. Mery, Glenn J. Pelletier, Jonathan R. Kaltman, Owen J. White, Felicia L. Trachtenberg, Danielle Hollenbeck-Pringle, Brian W. McCrindle, Donna M. Sylvester, Aaron W. Eckhauser, Sara K. Pasquali, Jeffery B. Anderson, Marcus S. Schamberger, Subhadra Shashidharan, Jeffrey P. Jacobs, Marshall L. Jacobs, Marko Boskovski, Jane W. Newburger, Meena Nathan
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- Cardiology in the Young / Volume 30 / Issue 6 / June 2020
- Published online by Cambridge University Press:
- 08 May 2020, pp. 807-817
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Background/Aims:
Registry-based trials have emerged as a potentially cost-saving study methodology. Early estimates of cost savings, however, conflated the benefits associated with registry utilisation and those associated with other aspects of pragmatic trial designs, which might not all be as broadly applicable. In this study, we sought to build a practical tool that investigators could use across disciplines to estimate the ranges of potential cost differences associated with implementing registry-based trials versus standard clinical trials.
Methods:We built simulation Markov models to compare unique costs associated with data acquisition, cleaning, and linkage under a registry-based trial design versus a standard clinical trial. We conducted one-way, two-way, and probabilistic sensitivity analyses, varying study characteristics over broad ranges, to determine thresholds at which investigators might optimally select each trial design.
Results:Registry-based trials were more cost effective than standard clinical trials 98.6% of the time. Data-related cost savings ranged from $4300 to $600,000 with variation in study characteristics. Cost differences were most reactive to the number of patients in a study, the number of data elements per patient available in a registry, and the speed with which research coordinators could manually abstract data. Registry incorporation resulted in cost savings when as few as 3768 independent data elements were available and when manual data abstraction took as little as 3.4 seconds per data field.
Conclusions:Registries offer important resources for investigators. When available, their broad incorporation may help the scientific community reduce the costs of clinical investigation. We offer here a practical tool for investigators to assess potential costs savings.
Resource utilisation in paediatric patients with secundum atrial septal defects
- Daniel S. Ziebell, Stephanie Ghaleb, Jeffrey Anderson, Christopher J. Statile
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- Journal:
- Cardiology in the Young / Volume 30 / Issue 3 / March 2020
- Published online by Cambridge University Press:
- 10 February 2020, pp. 383-387
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Background:
There is variation in care of secundum atrial septal defects. Defects <3 mm and patent foramen ovale are not clinically significant. Defects >3 mm are often followed clinically and may require closure. Variation in how these lesions are monitored may result in over-utilisation of routine studies and higher than necessary patient charges.
Purpose:To determine utilisation patterns for patients with secundum atrial septal defects diagnosed within the first year of life and compare to locally developed optimal utilisation standard to assess charge savings.
Methods:This was a retrospective chart review of patients with secundum atrial septal defects diagnosed within the first year of life. Patients with co-existing cardiac lesions were excluded. Total number of clinic visits, electrocardiograms, and echocardiograms were recorded. Total charge was calculated based on our standard institutional charges. Patients were stratified based on lesion and provider type and then compared to “optimal utilisation” using analysis of variance statistical analysis.
Results:Ninety-seven patients were included, 40 had patent foramen ovale (or atrial septal defect <3 mm), 43 had atrial septal defects not requiring intervention and 14 had atrial septal defects requiring intervention. There was a statistically significant difference in mean charge above optimal for these lesions of $1033, $2885, and $5722 (p < 0.02), respectively. There was statistically significant variation of charge among types of provider as well. Average charge savings per patient would be $2530 with total charge savings of $242,472 if the optimal utilisation pathway was followed.
Conclusion:Using optimal utilisation and decreasing variation could save the patient significant unnecessary charges.
Enhancing efficiency and scientific impact of a clinical trials network: the Pediatric Heart Network Integrated CARdiac Data and Outcomes (iCARD) Collaborative
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- Sara K. Pasquali, Jonathan R. Kaltman, J. William Gaynor, Brian W. McCrindle, Jane W. Newburger, Brett R. Anderson, Mark A. Scheurer, Nelangi M. Pinto, Jeffrey B. Anderson, Matthew E. Oster, Jeffrey P. Jacobs, Bradley S. Marino, Carlos M. Mery, Gail D. Pearson
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- Journal:
- Cardiology in the Young / Volume 29 / Issue 9 / September 2019
- Published online by Cambridge University Press:
- 06 August 2019, pp. 1121-1126
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Recent years have seen an exponential increase in the variety of healthcare data captured across numerous sources. However, mechanisms to leverage these data sources to support scientific investigation have remained limited. In 2013 the Pediatric Heart Network (PHN), funded by the National Heart, Lung, and Blood Institute, developed the Integrated CARdiac Data and Outcomes (iCARD) Collaborative with the goals of leveraging available data sources to aid in efficiently planning and conducting PHN studies; supporting integration of PHN data with other sources to foster novel research otherwise not possible; and mentoring young investigators in these areas. This review describes lessons learned through the development of iCARD, initial efforts and scientific output, challenges, and future directions. This information can aid in the use and optimisation of data integration methodologies across other research networks and organisations.
Lessons learned in the use of clinical registry data in a multi-centre prospective study: the Pediatric Heart Network Residual Lesion Score Study
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- Carol J. Prospero, Felicia L. Trachtenberg, Victoria L. Pemberton, Sara K. Pasquali, Brett R. Anderson, Kathleen E. Ash, Jessica Bainton, Carolyn Dunbar-Masterson, Eric M. Graham, Michelle S. Hamstra, Danielle Hollenbeck-Pringle, Jeffrey P. Jacobs, Marshall L. Jacobs, Rija John, Linda M. Lambert, Matthew E. Oster, Elizabeth Swan, Abigail Waldron, Meena Nathan, for the Pediatric Heart Network Investigators
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- Journal:
- Cardiology in the Young / Volume 29 / Issue 7 / July 2019
- Published online by Cambridge University Press:
- 17 June 2019, pp. 930-938
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Background:
Using existing data from clinical registries to support clinical trials and other prospective studies has the potential to improve research efficiency. However, little has been reported about staff experiences and lessons learned from implementation of this method in pediatric cardiology.
Objectives:We describe the process of using existing registry data in the Pediatric Heart Network Residual Lesion Score Study, report stakeholders’ perspectives, and provide recommendations to guide future studies using this methodology.
Methods:The Residual Lesion Score Study, a 17-site prospective, observational study, piloted the use of existing local surgical registry data (collected for submission to the Society of Thoracic Surgeons-Congenital Heart Surgery Database) to supplement manual data collection. A survey regarding processes and perceptions was administered to study site and data coordinating center staff.
Results:Survey response rate was 98% (54/55). Overall, 57% perceived that using registry data saved research staff time in the current study, and 74% perceived that it would save time in future studies; 55% noted significant upfront time in developing a methodology for extracting registry data. Survey recommendations included simplifying data extraction processes and tailoring to the needs of the study, understanding registry characteristics to maximise data quality and security, and involving all stakeholders in design and implementation processes.
Conclusions:Use of existing registry data was perceived to save time and promote efficiency. Consideration must be given to the upfront investment of time and resources needed. Ongoing efforts focussed on automating and centralising data management may aid in further optimising this methodology for future studies.
Antimicrobial activity of a continuous visible light disinfection system
- William A. Rutala, Hajime Kanamori, Maria F. Gergen, Emily E. Sickbert-Bennett, Daniel J. Sexton, Deverick J. Anderson, Jeffrey Laux, David J. Weber, the CDC Prevention Epicenters Program
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- Journal:
- Infection Control & Hospital Epidemiology / Volume 39 / Issue 10 / October 2018
- Published online by Cambridge University Press:
- 30 August 2018, pp. 1250-1253
- Print publication:
- October 2018
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We evaluated the ability of high-intensity visible violet light with a peak output of 405 nm to kill epidemiologically important pathogens. The high irradiant light significantly reduced both vegetative bacteria and spores at some time points over a 72-hour exposure period.
Nomenclature for congenital and paediatric cardiac disease: the International Paediatric and Congenital Cardiac Code (IPCCC) and the Eleventh Iteration of the International Classification of Diseases (ICD-11)*
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- Rodney C. G. Franklin, Marie J. Béland, Steven D. Colan, Henry L. Walters III, Vera D. Aiello, Robert H. Anderson, Frédérique Bailliard, Jeffrey R. Boris, Meryl S. Cohen, J. William Gaynor, Kristine J. Guleserian, Lucile Houyel, Marshall L. Jacobs, Amy L. Juraszek, Otto N. Krogmann, Hiromi Kurosawa, Leo Lopez, Bohdan J. Maruszewski, James D. St. Louis, Stephen P. Seslar, Shubhika Srivastava, Giovanni Stellin, Christo I. Tchervenkov, Paul M. Weinberg, Jeffrey P. Jacobs
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- Journal:
- Cardiology in the Young / Volume 27 / Issue 10 / December 2017
- Published online by Cambridge University Press:
- 29 December 2017, pp. 1872-1938
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An internationally approved and globally used classification scheme for the diagnosis of CHD has long been sought. The International Paediatric and Congenital Cardiac Code (IPCCC), which was produced and has been maintained by the International Society for Nomenclature of Paediatric and Congenital Heart Disease (the International Nomenclature Society), is used widely, but has spawned many “short list” versions that differ in content depending on the user. Thus, efforts to have a uniform identification of patients with CHD using a single up-to-date and coordinated nomenclature system continue to be thwarted, even if a common nomenclature has been used as a basis for composing various “short lists”. In an attempt to solve this problem, the International Nomenclature Society has linked its efforts with those of the World Health Organization to obtain a globally accepted nomenclature tree for CHD within the 11th iteration of the International Classification of Diseases (ICD-11). The International Nomenclature Society has submitted a hierarchical nomenclature tree for CHD to the World Health Organization that is expected to serve increasingly as the “short list” for all communities interested in coding for congenital cardiology. This article reviews the history of the International Classification of Diseases and of the IPCCC, and outlines the process used in developing the ICD-11 congenital cardiac disease diagnostic list and the definitions for each term on the list. An overview of the content of the congenital heart anomaly section of the Foundation Component of ICD-11, published herein in its entirety, is also included. Future plans for the International Nomenclature Society include linking again with the World Health Organization to tackle procedural nomenclature as it relates to cardiac malformations. By doing so, the Society will continue its role in standardising nomenclature for CHD across the globe, thereby promoting research and better outcomes for fetuses, children, and adults with congenital heart anomalies.
Summary of the Snowmastodon Project Special Volume A high-elevation, multi-proxy biotic and environmental record of MIS 6–4 from the Ziegler Reservoir fossil site, Snowmass Village, Colorado, USA
- Ian M. Miller, Jeffrey S. Pigati, R. Scott Anderson, Kirk R. Johnson, Shannon A. Mahan, Thomas A. Ager, Richard G. Baker, Maarten Blaauw, Jordon Bright, Peter M. Brown, Bruce Bryant, Zachary T. Calamari, Paul E. Carrara, Michael D. Cherney, John R. Demboski, Scott A. Elias, Daniel C. Fisher, Harrison J. Gray, Danielle R. Haskett, Jeffrey S. Honke, Stephen T. Jackson, Gonzalo Jiménez-Moreno, Douglas Kline, Eric M. Leonard, Nathaniel A. Lifton, Carol Lucking, H. Gregory McDonald, Dane M. Miller, Daniel R. Muhs, Stephen E. Nash, Cody Newton, James B. Paces, Lesley Petrie, Mitchell A. Plummer, David F. Porinchu, Adam N. Rountrey, Eric Scott, Joseph J.W. Sertich, Saxon E. Sharpe, Gary L. Skipp, Laura E. Strickland, Richard K. Stucky, Robert S. Thompson, Jim Wilson
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- Quaternary Research / Volume 82 / Issue 3 / November 2014
- Published online by Cambridge University Press:
- 20 January 2017, pp. 618-634
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In North America, terrestrial records of biodiversity and climate change that span Marine Oxygen Isotope Stage (MIS) 5 are rare. Where found, they provide insight into how the coupling of the ocean–atmosphere system is manifested in biotic and environmental records and how the biosphere responds to climate change. In 2010–2011, construction at Ziegler Reservoir near Snowmass Village, Colorado (USA) revealed a nearly continuous, lacustrine/wetland sedimentary sequence that preserved evidence of past plant communities between ~140 and 55 ka, including all of MIS 5. At an elevation of 2705 m, the Ziegler Reservoir fossil site also contained thousands of well-preserved bones of late Pleistocene megafauna, including mastodons, mammoths, ground sloths, horses, camels, deer, bison, black bear, coyotes, and bighorn sheep. In addition, the site contained more than 26,000 bones from at least 30 species of small animals including salamanders, otters, muskrats, minks, rabbits, beavers, frogs, lizards, snakes, fish, and birds. The combination of macro- and micro-vertebrates, invertebrates, terrestrial and aquatic plant macrofossils, a detailed pollen record, and a robust, directly dated stratigraphic framework shows that high-elevation ecosystems in the Rocky Mountains of Colorado are climatically sensitive and varied dramatically throughout MIS 5.
Contributors
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- By Mitchell Aboulafia, Frederick Adams, Marilyn McCord Adams, Robert M. Adams, Laird Addis, James W. Allard, David Allison, William P. Alston, Karl Ameriks, C. Anthony Anderson, David Leech Anderson, Lanier Anderson, Roger Ariew, David Armstrong, Denis G. Arnold, E. J. Ashworth, Margaret Atherton, Robin Attfield, Bruce Aune, Edward Wilson Averill, Jody Azzouni, Kent Bach, Andrew Bailey, Lynne Rudder Baker, Thomas R. Baldwin, Jon Barwise, George Bealer, William Bechtel, Lawrence C. Becker, Mark A. Bedau, Ernst Behler, José A. Benardete, Ermanno Bencivenga, Jan Berg, Michael Bergmann, Robert L. Bernasconi, Sven Bernecker, Bernard Berofsky, Rod Bertolet, Charles J. Beyer, Christian Beyer, Joseph Bien, Joseph Bien, Peg Birmingham, Ivan Boh, James Bohman, Daniel Bonevac, Laurence BonJour, William J. Bouwsma, Raymond D. Bradley, Myles Brand, Richard B. Brandt, Michael E. Bratman, Stephen E. Braude, Daniel Breazeale, Angela Breitenbach, Jason Bridges, David O. Brink, Gordon G. Brittan, Justin Broackes, Dan W. Brock, Aaron Bronfman, Jeffrey E. Brower, Bartosz Brozek, Anthony Brueckner, Jeffrey Bub, Lara Buchak, Otavio Bueno, Ann E. Bumpus, Robert W. Burch, John Burgess, Arthur W. Burks, Panayot Butchvarov, Robert E. Butts, Marina Bykova, Patrick Byrne, David Carr, Noël Carroll, Edward S. Casey, Victor Caston, Victor Caston, Albert Casullo, Robert L. Causey, Alan K. L. Chan, Ruth Chang, Deen K. Chatterjee, Andrew Chignell, Roderick M. Chisholm, Kelly J. Clark, E. J. Coffman, Robin Collins, Brian P. Copenhaver, John Corcoran, John Cottingham, Roger Crisp, Frederick J. Crosson, Antonio S. Cua, Phillip D. Cummins, Martin Curd, Adam Cureton, Andrew Cutrofello, Stephen Darwall, Paul Sheldon Davies, Wayne A. Davis, Timothy Joseph Day, Claudio de Almeida, Mario De Caro, Mario De Caro, John Deigh, C. F. Delaney, Daniel C. Dennett, Michael R. DePaul, Michael Detlefsen, Daniel Trent Devereux, Philip E. Devine, John M. Dillon, Martin C. Dillon, Robert DiSalle, Mary Domski, Alan Donagan, Paul Draper, Fred Dretske, Mircea Dumitru, Wilhelm Dupré, Gerald Dworkin, John Earman, Ellery Eells, Catherine Z. Elgin, Berent Enç, Ronald P. Endicott, Edward Erwin, John Etchemendy, C. Stephen Evans, Susan L. Feagin, Solomon Feferman, Richard Feldman, Arthur Fine, Maurice A. Finocchiaro, William FitzPatrick, Richard E. Flathman, Gvozden Flego, Richard Foley, Graeme Forbes, Rainer Forst, Malcolm R. Forster, Daniel Fouke, Patrick Francken, Samuel Freeman, Elizabeth Fricker, Miranda Fricker, Michael Friedman, Michael Fuerstein, Richard A. Fumerton, Alan Gabbey, Pieranna Garavaso, Daniel Garber, Jorge L. A. Garcia, Robert K. Garcia, Don Garrett, Philip Gasper, Gerald Gaus, Berys Gaut, Bernard Gert, Roger F. Gibson, Cody Gilmore, Carl Ginet, Alan H. Goldman, Alvin I. Goldman, Alfonso Gömez-Lobo, Lenn E. Goodman, Robert M. Gordon, Stefan Gosepath, Jorge J. E. Gracia, Daniel W. Graham, George A. Graham, Peter J. Graham, Richard E. Grandy, I. Grattan-Guinness, John Greco, Philip T. Grier, Nicholas Griffin, Nicholas Griffin, David A. Griffiths, Paul J. Griffiths, Stephen R. Grimm, Charles L. Griswold, Charles B. Guignon, Pete A. Y. Gunter, Dimitri Gutas, Gary Gutting, Paul Guyer, Kwame Gyekye, Oscar A. Haac, Raul Hakli, Raul Hakli, Michael Hallett, Edward C. Halper, Jean Hampton, R. James Hankinson, K. R. Hanley, Russell Hardin, Robert M. Harnish, William Harper, David Harrah, Kevin Hart, Ali Hasan, William Hasker, John Haugeland, Roger Hausheer, William Heald, Peter Heath, Richard Heck, John F. Heil, Vincent F. Hendricks, Stephen Hetherington, Francis Heylighen, Kathleen Marie Higgins, Risto Hilpinen, Harold T. Hodes, Joshua Hoffman, Alan Holland, Robert L. Holmes, Richard Holton, Brad W. Hooker, Terence E. Horgan, Tamara Horowitz, Paul Horwich, Vittorio Hösle, Paul Hoβfeld, Daniel Howard-Snyder, Frances Howard-Snyder, Anne Hudson, Deal W. Hudson, Carl A. Huffman, David L. 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Sherburne, Christopher Shields, Roger A. Shiner, Sydney Shoemaker, Robert K. Shope, Kwong-loi Shun, Wilfried Sieg, A. John Simmons, Robert L. Simon, Marcus G. Singer, Georgette Sinkler, Walter Sinnott-Armstrong, Matti T. Sintonen, Lawrence Sklar, Brian Skyrms, Robert C. Sleigh, Michael Anthony Slote, Hans Sluga, Barry Smith, Michael Smith, Robin Smith, Robert Sokolowski, Robert C. Solomon, Marta Soniewicka, Philip Soper, Ernest Sosa, Nicholas Southwood, Paul Vincent Spade, T. L. S. Sprigge, Eric O. Springsted, George J. Stack, Rebecca Stangl, Jason Stanley, Florian Steinberger, Sören Stenlund, Christopher Stephens, James P. Sterba, Josef Stern, Matthias Steup, M. A. Stewart, Leopold Stubenberg, Edith Dudley Sulla, Frederick Suppe, Jere Paul Surber, David George Sussman, Sigrún Svavarsdóttir, Zeno G. Swijtink, Richard Swinburne, Charles C. Taliaferro, Robert B. Talisse, John Tasioulas, Paul Teller, Larry S. Temkin, Mark Textor, H. S. Thayer, Peter Thielke, Alan Thomas, Amie L. Thomasson, Katherine Thomson-Jones, Joshua C. Thurow, Vzalerie Tiberius, Terrence N. Tice, Paul Tidman, Mark C. Timmons, William Tolhurst, James E. Tomberlin, Rosemarie Tong, Lawrence Torcello, Kelly Trogdon, J. D. Trout, Robert E. Tully, Raimo Tuomela, John Turri, Martin M. Tweedale, Thomas Uebel, Jennifer Uleman, James Van Cleve, Harry van der Linden, Peter van Inwagen, Bryan W. Van Norden, René van Woudenberg, Donald Phillip Verene, Samantha Vice, Thomas Vinci, Donald Wayne Viney, Barbara Von Eckardt, Peter B. M. Vranas, Steven J. Wagner, William J. Wainwright, Paul E. Walker, Robert E. Wall, Craig Walton, Douglas Walton, Eric Watkins, Richard A. Watson, Michael V. Wedin, Rudolph H. Weingartner, Paul Weirich, Paul J. Weithman, Carl Wellman, Howard Wettstein, Samuel C. Wheeler, Stephen A. White, Jennifer Whiting, Edward R. Wierenga, Michael Williams, Fred Wilson, W. Kent Wilson, Kenneth P. Winkler, John F. Wippel, Jan Woleński, Allan B. Wolter, Nicholas P. Wolterstorff, Rega Wood, W. Jay Wood, Paul Woodruff, Alison Wylie, Gideon Yaffe, Takashi Yagisawa, Yutaka Yamamoto, Keith E. Yandell, Xiaomei Yang, Dean Zimmerman, Günter Zoller, Catherine Zuckert, Michael Zuckert, Jack A. Zupko (J.A.Z.)
- Edited by Robert Audi, University of Notre Dame, Indiana
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- The Cambridge Dictionary of Philosophy
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- 05 August 2015
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- 27 April 2015, pp ix-xxx
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- By Brittany L. Anderson-Montoya, Heather R. Bailey, Carryl L. Baldwin, Daphne Bavelier, Jameson D. Beach, Jeffrey S. Bedwell, Kevin B. Bennett, Richard A. Block, Deborah A. Boehm-Davis, Corey J. Bohil, David B. Boles, Avinoam Borowsky, Jessica Bramlett, Allison A. Brennan, J. Christopher Brill, Matthew S. Cain, Meredith Carroll, Roberto Champney, Kait Clark, Nancy J. Cooke, Lori M. Curtindale, Clare Davies, Patricia R. DeLucia, Andrew E. Deptula, Michael B. Dillard, Colin D. Drury, Christopher Edman, James T. Enns, Sara Irina Fabrikant, Victor S. Finomore, Arthur D. Fisk, John M. Flach, Matthew E. Funke, Andre Garcia, Adam Gazzaley, Douglas J. Gillan, Rebecca A. Grier, Simen Hagen, Kelly Hale, Diane F. Halpern, Peter A. Hancock, Deborah L. Harm, Mary Hegarty, Laurie M. Heller, Nicole D. Helton, William S. Helton, Robert R. Hoffman, Jerred Holt, Xiaogang Hu, Richard J. Jagacinski, Keith S. Jones, Astrid M. L. Kappers, Simon Kemp, Robert C. Kennedy, Robert S. Kennedy, Alan Kingstone, Ioana Koglbauer, Norman E. Lane, Robert D. Latzman, Cynthia Laurie-Rose, Patricia Lee, Richard Lowe, Valerie Lugo, Poornima Madhavan, Leonard S. Mark, Gerald Matthews, Jyoti Mishra, Stephen R. Mitroff, Tracy L. Mitzner, Alexander M. Morison, Taylor Murphy, Takamichi Nakamoto, John G. Neuhoff, Karl M. Newell, Tal Oron-Gilad, Raja Parasuraman, Tiffany A. Pempek, Robert W. Proctor, Katie A. Ragsdale, Anil K. Raj, Millard F. Reschke, Evan F. Risko, Matthew Rizzo, Wendy A. Rogers, Jesse Q. Sargent, Mark W. Scerbo, Natasha B. Schwartz, F. Jacob Seagull, Cory-Ann Smarr, L. James Smart, Kay Stanney, James Staszewski, Clayton L. Stephenson, Mary E. Stuart, Breanna E. Studenka, Joel Suss, Leedjia Svec, James L. Szalma, James Tanaka, James Thompson, Wouter M. Bergmann Tiest, Lauren A. Vassiliades, Michael A. Vidulich, Paul Ward, Joel S. Warm, David A. Washburn, Christopher D. Wickens, Scott J. Wood, David D. Woods, Motonori Yamaguchi, Lin Ye, Jeffrey M. Zacks
- Edited by Robert R. Hoffman, Peter A. Hancock, University of Central Florida, Mark W. Scerbo, Old Dominion University, Virginia, Raja Parasuraman, George Mason University, Virginia, James L. Szalma, University of Central Florida
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- The Cambridge Handbook of Applied Perception Research
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- 05 July 2015
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- 26 January 2015, pp xi-xiv
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- By Robert S. Anderson, (Mary) Colleen Bhalla, Michelle Blanda, Christopher Carpenter, Chris Chauhan, Paul L. DeSandre, Maura Dickinson, Jonathan A. Edlow, Dany Elsayegh, Kara Iskyan Geren, Peter J. Gruber, Jin H. Han, Marianne Haughey, Teresita M. Hogan, Ula Hwang, Lindsay Jin, Michael P. Jones, Joseph H. Kahn, Keli M. Kwok, Denise Law, Megan M. Leo, Stephen Y. Liang, Judith A. Linden, Brendan G. Magauran Jr, Joseph P. Martinez, Amal Mattu, Karen M. May, Aileen McCabe, Kerry K. McCabe, Jolion McGreevy, Ron Medzon, Ravi K. Murthy, Aneesh T. Narang, Lauren M. Nentwich, David E. Newman-Toker, Jonathan S. Olshaker, Joseph R. Pare, Thomas Perera, Joanna Piechniczek-Buczek, Jesse M. Pines, Timothy Platts-Mills, Suzanne Michelle Rhodes, Lynne Rosenberg, Mark Rosenberg, Todd C. Rothenhaus, Kristine Samson, Arthur B. Sanders, Jeffrey I. Schneider, Rishi Sikka, Kirk A. Stiffler, Morsal R. Tahouni, Mary E. Tanski, Abel Wakai, Scott T. Wilber, Deborah R. Wong
- Edited by Joseph H. Kahn, Brendan G. Magauran, Jr, Jonathan S. Olshaker
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- Geriatric Emergency Medicine
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- 05 January 2014
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- 16 January 2014, pp vii-x
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- By James Ahn, Eric L. Anderson, Annette L. Beautrais, Dennis Beedle, Jon S. Berlin, Benjamin L. Bregman, Peter Brown, Suzie Bruch, Jonathan Busko, Stuart Buttlaire, Laurie Byrne, Gerald Carroll, Valerie A. Carroll, Margaret Cashman, Joseph R. Check, Lara G. Chepenik, Robert N. Cuyler, Preeti Dalawari, Suzanne Dooley-Hash, William R. Dubin, Mila L. Felder, Avrim B. Fishkind, Reginald I. Gaylord, Rachel Lipson Glick, Travis Grace, Clare Gray, Anita Hart, Ross A. Heller, Amanda E. Horn, David S. Howes, David C. Hsu, Andy Jagoda, Margaret Judd, John Kahler, Daryl Knox, Gregory Luke Larkin, Patricia Lee, Jerrold B. Leikin, Eddie Markul, Marc L. Martel, J. D. McCourt, MaryLynn McGuire Clarke, Mark Newman, Anthony T. Ng, Barbara Nightengale, Kimberly Nordstrom, Jagoda Pasic, Jennifer Peltzer-Jones, Marcia A. Perry, Larry Phillips, Paul Porter, Seth Powsner, Michael S. Pulia, Erin Rapp, Divy Ravindranath, Janet S. Richmond, Silvana Riggio, Harvey L. Ruben, Derek J. Robinson, Douglas A. Rund, Omeed Saghafi, Alicia N. Sanders, Jeffrey Sankoff, Lorin M. Scher, Louis Scrattish, Richard D. Shih, Maureen Slade, Susan Stefan, Victor G. Stiebel, Deborah Taber, Vaishal Tolia, Gary M. Vilke, Alvin Wang, Michael A. Ward, Joseph Weber, Michael P. Wilson, James L. Young, Scott L. Zeller
- Edited by Leslie S. Zun
- Edited in association with Lara G. Chepenik, Mary Nan S. Mallory
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- Behavioral Emergencies for the Emergency Physician
- Published online:
- 05 April 2013
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- 21 March 2013, pp viii-xii
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- By Jeffrey Anderson, Sabrina Bent, Lesley Bourlet, Ann Bui, Seth Christian, Ashish Dabas, Judy Dahle, Franklin Dexter, Richard P. Dutton, Christoph Egger, Richard H. Epstein, Deborah Farmer, Charles J. Fox, Melissa Guidry, Barbara Harris, Michael R. Hicks, Judy G. Johnson, Zeev Kain, Alicia G. Kalamas, Alan D. Kaye, Valeriy Kozmenko, Henry Liu, Asa C. Lockhart, Robert Lynch, Alex Macario, Dipty Mangla, Ross Musumeci, George Mychaskiw, Frank G. Opelka, Pat Patterson, Sonya Pease, Nigel N. Robertson, Frank Rosinia, Keith J. Ruskin, Laurie Saletnik, Devona Slater, Bernadine Smith, Richard D. Urman, Shermeen B. Vakharia, Steven D. Waldman, John J. Wellik, Michael R. Williams, Melville Wyche, Michael J. Yarborough
- Edited by Alan D. Kaye, Louisiana State University, Charles J. Fox, III, Richard D. Urman
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- Operating Room Leadership and Management
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- 05 October 2012
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- 04 October 2012, pp ix-xi
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The effect of paediatric syncope on health-related quality of life
- Jeffrey B. Anderson, Richard J. Czosek, Timothy K. Knilans, Bradley S. Marino
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- Journal:
- Cardiology in the Young / Volume 22 / Issue 5 / 13 September 2012
- Published online by Cambridge University Press:
- 21 February 2012, pp. 583-588
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Background
Syncope is common in children and adolescents and most commonly represents neurocardiogenic syncope. No information has been reported regarding the effect of syncope on health-related quality of life in children.
MethodsThis was a retrospective cohort study of patients seen in the Heart Institute Syncope Clinic at Cincinnati Children's Hospital Medical Center between July, 2009 and June, 2010. Health-related quality of life was assessed using the PedsQL™ tool. PedsQL™ scores were compared with both healthy historical controls and historical controls with chronic illnesses.
ResultsA total of 106 patients were included for analysis. In all, 90% were Caucasian and 63% were girls. The median age was 15.1 years (8.2–21.6). Compared with healthy controls, patients had lower PedsQL™ scores: Total score (75.2 versus 83.8, p < 0.0001); Physical Health Summary (78.8 versus 87.5, p < 0.0001); Psychosocial Health Summary (73.9 versus 81.9, p < 0.001), Emotional Functioning (68.9 versus 79.3, p < 0.001); and School Functioning (66.4 versus 81.1, p < 0.001). No difference was seen in Social Functioning (86.2 versus 85.2, p = 0.81). Patients also had lower PedsQL™ Total scores than patients with diabetes mellitus (p < 0.0001) and similar scores to patients with asthma, end-stage renal disease, obesity, and structural heart disease.
ConclusionChildren with syncope, although typically benign in aetiology, can have low health-related quality of life.
Contributing Authors
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- By Caroline (Cal) Baier-Anderson, Larry Binning, Dominique Brossard, Alvin J. Bussan, Anthony J. Cavalieri, Jason R. Cavatorta, Jed Colquhoun, José Falck-Zepeda, Gregory D. Graff, Stewart M. Gray, The Rev. Lowell E. Grisham, Russell Groves, Michelle Mauthe Harvey, Molly M. Jahn, Shelley Jansky, Jiming Jiang, Nicholas Kalaitzandonakes, Keith Kelling, Deana Knuteson, Peggy G. Lemaux, Marty D. Matlock, William H. Meyers, Paul D. Mitchell, William Muir, Pamela Ronald, Matt Ruark, Eric S. Sachs, Mark K. Sears, Erin Silva, Walter R. Stevenson, Alison Van Eenennaam, Jeffrey D. Wolt, Jeff Wyman, David Zilberman
- Edited by Jennie S. Popp, University of Arkansas, Molly M. Jahn, University of Wisconsin, Madison, Marty D. Matlock, University of Arkansas, Nathan P. Kemper, University of Arkansas
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- Book:
- The Role of Biotechnology in a Sustainable Food Supply
- Published online:
- 05 June 2012
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- 31 January 2012, pp xiv-xviii
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