Proceedings of a workshop on 'Oral contraception for women over 35'. Lausanne (Switzerland), 4-5 March 1988.
D003267:Contraception / Q000379:methods*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008423:Maternal Age; D018566:Pregnancy, High-Risk
D003276:Contraceptives, Oral