title: Letter: Side effects of oral contraceptives.
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects*; D004967:Estrogens / Q000009:adverse effects; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000139:chemically induced*; D007989:Libido / Q000187:drug effects*; D009644:Norgestrel / Q000494:pharmacology; D011247:Pregnancy; D013923:Thromboembolism / Q000139:chemically induced*; D013927:Thrombosis / Q000139:chemically induced
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D009644:Norgestrel