title: Post coital contraception--A pilot study.
mesh_terms: D000293:Adolescent; D000328:Adult; D001706:Biopsy; D003276:Contraceptives, Oral / Q000009:adverse effects; D003281:Contraceptives, Postcoital / Q000009:adverse effects; D004717:Endometrium / Q000166:cytology / Q000187:drug effects; D004997:Ethinyl Estradiol / Q000009:adverse effects / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects; D008599:Menstruation Disturbances / Q000139:chemically induced; D009644:Norgestrel / Q000009:adverse effects / Q000494:pharmacology*; D010865:Pilot Projects; D011247:Pregnancy; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital; D009644:Norgestrel; D004997:Ethinyl Estradiol