Contraception--the morning after.
D003281:Contraceptives, Postcoital / Q000494:pharmacology*; D004997:Ethinyl Estradiol / Q000494:pharmacology; D019304:Ethinyl Estradiol-Norgestrel Combination; D005260:Female; D005306:Fertilization / Q000187:drug effects; D006801:Humans; D008597:Menstrual Cycle / Q000187:drug effects; D009644:Norgestrel / Q000494:pharmacology; D011247:Pregnancy
D003281:Contraceptives, Postcoital; D009644:Norgestrel; D004997:Ethinyl Estradiol; D019304:Ethinyl Estradiol-Norgestrel Combination