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Incidence of Twin Births in Denmark from 1911 to 1974

Published online by Cambridge University Press:  01 August 2014

Johannes Nielsen ,
Akira Homma ,
Bo Isaksen  and
Aksel Bertelsen
Johannes Nielsen*
Affiliation:
Aarhus Psychiatric Hospital, Risskov, Denmark
Akira Homma
Affiliation:
Aarhus Psychiatric Hospital, Risskov, Denmark
Bo Isaksen
Affiliation:
Aarhus Psychiatric Hospital, Risskov, Denmark
Aksel Bertelsen
Affiliation:
Aarhus Psychiatric Hospital, Risskov, Denmark
*
Cytogenetic Laboratory, Aarhus Psychiatric Hospital, DK-8240 Risskov, Denmark

Abstract

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A survey of twin births in Denmark in relation to the total number of births from 1911 to 1974 shows a significant decrease in the dizygotic twin birth rate for all maternal age groups. The possible environmental causes of such a decrease are discussed.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 27 , January 1978 , pp. 45 - 49
Copyright
Copyright © The International Society for Twin Studies 1978

References

REFERENCES

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