Letter: Oral contraception: potential hazards of hormone therapy during pregnancy.
D000014:Abnormalities, Drug-Induced / Q000209:etiology*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D003281:Contraceptives, Postcoital / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy / Q000187:drug effects*; D011258:Pregnancy Tests
D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital