title: [Clinical trial of the combined contraceptive preparation, Ovidon].
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects; D004997:Ethinyl Estradiol / Q000009:adverse effects; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects; D009644:Norgestrel / Q000009:adverse effects; D014592:Uterine Hemorrhage / Q000139:chemically induced
chemical_list: D003277:Contraceptives, Oral, Combined; D009644:Norgestrel; D004997:Ethinyl Estradiol
vernacular_title: Klinichno izpitvane na kominiraniia protivozachatuchen preparat ovidon.