title: [A new 2-step combination preparation for hormonal contraception].
mesh_terms: D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects / Q000494:pharmacology*; D004338:Drug Combinations; D004341:Drug Evaluation; D004997:Ethinyl Estradiol / Q000494:pharmacology*; D005260:Female; D006801:Humans; D009640:Norethindrone / Q000494:pharmacology*; D010060:Ovulation / Q000187:drug effects*; D014592:Uterine Hemorrhage / Q000209:etiology
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004338:Drug Combinations; C020416:norethindrone acetate, ethinyl estradiol, ferrous fumarate drug combination; D004997:Ethinyl Estradiol; D009640:Norethindrone
vernacular_title: Ein neues, zweistufiges Kombinationspräparat zur hormonellen Kontrazeption.