title: Postcoital contraception with PC4.
mesh_terms: D003281:Contraceptives, Postcoital; D003282:Contraceptives, Postcoital, Hormonal; D004338:Drug Combinations; D004997:Ethinyl Estradiol / Q000009:adverse effects; D019304:Ethinyl Estradiol-Norgestrel Combination; D006801:Humans; D009644:Norgestrel / Q000009:adverse effects
chemical_list: D003281:Contraceptives, Postcoital; D003282:Contraceptives, Postcoital, Hormonal; D004338:Drug Combinations; D009644:Norgestrel; D004997:Ethinyl Estradiol; D019304:Ethinyl Estradiol-Norgestrel Combination