title: The use of progestogens as postcoital oral contraceptives.
mesh_terms: D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000139:chemically induced; D001706:Biopsy; D001835:Body Weight / Q000187:drug effects; D003276:Contraceptives, Oral / Q000009:adverse effects* / Q000494:pharmacology; D003281:Contraceptives, Postcoital / Q000009:adverse effects* / Q000494:pharmacology; D003710:Demography; D004717:Endometrium / Q000166:cytology / Q000187:drug effects; D005260:Female; D006801:Humans; D007774:Lactation / Q000187:drug effects; D008598:Menstruation / Q000187:drug effects; D009644:Norgestrel / Q000009:adverse effects / Q000494:pharmacology*; D009649:Norpregnadienes / Q000009:adverse effects / Q000494:pharmacology; D011247:Pregnancy; D011372:Progestins; D014592:Uterine Hemorrhage / Q000139:chemically induced; D014626:Vaginal Smears
chemical_list: D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital; D009649:Norpregnadienes; D011372:Progestins; D009644:Norgestrel