1. Aertgeerts J (1974). Wirkung oraler Östrogene auf die Haut der Frau in der Postmenopause und nach Kontrazeption. Ther Gegenw 113: 1739
2. Alffram PA, Bauer GCH (1962) Epidemiology of fractures of the forearm. J Bone Joint Surg 44-A: 105–114
3. Alhava EM, Puttinen J (1973) Fractures of the upper end of the femur as an index of senile osteoporosis in Finland. Ann Clin Res 5: 398–403
4. Andersch G, Hahn L (1985) Progesterone treatment of premenopausal tension — a double blind study. J Psychosom Res 29: 489
5. Andersch B, Wendestam C, Hahn L, Ohman R (1986) Premenstrual complaints. I. prevalence of premenstrual symptoms in a Swedish urban population. J Psychosom Obstet Gynaecol 5: 39–49