Hormonal pregnancy tests and congenital malformations.
D000014:Abnormalities, Drug-Induced; D004338:Drug Combinations; D004997:Ethinyl Estradiol; D005260:Female; D006801:Humans; D009640:Norethindrone; D011247:Pregnancy; D011258:Pregnancy Tests
D004338:Drug Combinations; D004997:Ethinyl Estradiol; D009640:Norethindrone