Letter: Vitamin A and the teratogenic risks of oral contraceptives.
D000014:Abnormalities, Drug-Induced; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011485:Protein Binding; D014801:Vitamin A / Q000097:blood*
D003276:Contraceptives, Oral; D014801:Vitamin A