1. Health and sickness. The chance oftreatment;WJH, Wadsworth M.E.J.Butterfield; R, Blaney,1971
2. Psychiatric illness in general practice;Shepherd, M.; Cooper, B.; Brown, A.C.; Kappan, G.W.,1966
3. An epidemiologic comparison of pain complaints;M, Von Korff; SF, Dworkin; L, Le Resche; A, Kruger;Pain,1988
4. Medically unexplained physical symptoms, somatization disorder and abridged somatization disorder: studies with the diagnostic interview schedule;Escobar, J.I.; Manu, P.; Mathews, D.; Lane, T.; Swartz, M.; Canino, G.;Psvchiatr Dev,1989
5. Morbidity statistics from general practice 1981-82;Royal College of General Practitioners, Office of Population Censuses and Surveys, Department of Health and Social Securitv,1986