title: Postovulatory contraception in women with large doses of norethindrone.
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D010064:Embryo Implantation / Q000187:drug effects; D004958:Estradiol / Q000097:blood; D005260:Female; D005298:Fertility / Q000187:drug effects; D006801:Humans; D008598:Menstruation / Q000187:drug effects; D009640:Norethindrone / Q000008:administration & dosage / Q000494:pharmacology; D010060:Ovulation; D011247:Pregnancy; D011374:Progesterone / Q000097:blood; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin; D011374:Progesterone; D004958:Estradiol; D009640:Norethindrone