title: Antifertility agents: introduction and history.
mesh_terms: D003276:Contraceptives, Oral / Q000266:history*; D004967:Estrogens / Q000494:pharmacology; D005260:Female; D049673:History, 20th Century; D006801:Humans; D009640:Norethindrone / Q000494:pharmacology; D009641:Norethynodrel / Q000494:pharmacology; D010060:Ovulation / Q000187:drug effects; D011374:Progesterone / Q000494:pharmacology; D011372:Progestins / Q000494:pharmacology; D013739:Testosterone / Q000494:pharmacology
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D011372:Progestins; D013739:Testosterone; D011374:Progesterone; D009641:Norethynodrel; D009640:Norethindrone