1. Allebeck P, Ahlborn A, Ljungstrøm K, Allander E (1983) Do oral contraceptives prevent rheumatoid arthritis x. European Congress of Rheumatology, Abstract 61
2. Bohn H, Bauer HW (1981) Pregnancy-associated α2-glycoprotein (α2-PAG): Importance of its determination in malignant diseases. Med Lab 9:27–34
3. Bulmash JM (1979) Rheumatoid arthritis and pregnancy. Obstet Gynecol Ann 8:223–276
4. Cecere PA, Persellin RH (1981) The interaction of pregnancy and the rheumatic diseases. Clin Rheum Dis 7:747–768
5. Hadorn R (1975) Sexe, grossesse et alloantigenes (HL-A), bases d'une classification des maladies rheumatismales (Apropos de 30 grossesses dans la pelvispondylitis rheumatismale). Med Hyg 33:557–562