Finlay-Jones, R. & Murphy, E. (1979) Severity of psychiatric disorder and the 30-item General Health Questionnaire. British Journal of Psychiatry, 134, 609–616.
Ford, M. J., Miller, P. McC., Eastwood, J. & Eastwood, M. A. (1987) Life events, psychiatric illness and the irritable bowel syndrome. Gut, 28, 160–165.
Goldberg, D. P. & Blackwell, B. (1970) Psychiatric illness in general practice. A detailed study using a new method of case identification. British Medical Journal, 2, 439–443.
Goldberg, D. P. & Blackwell, B. (1978) Manual of the General Health Questionnaire.
Jenkins, S., Jenkins, M. D. & Campbell, A. (1981) A survey of 500 consecutive new patients attending medical outpatients at the Royal London Homoeopathic Hospital. The British Homoeopathic Journal, 70, 23–26.
Macaulay, A. J., Stern, R. S., Holmes, D. M. & Stanton, S. L. (1987) Micturition and the mind: Psychological factors in the aetiology and treatment of urinary symptoms in women. British Medical Journal, 1, 540–543.
Mechanic, D. (1978) Medical Sociology, Second edition.
New York: The Free Press; .
Reilly, D. T., Taylor, M. A., McSharry, C. & Aitchison, T. (1986) Is homeopathy a placebo response? Controlled trial of homoeopathic potency, with pollen in hayfever as model. Lancet, 2, 881–886