Letter: Oral contraceptives and allergy.
D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004342:Drug Hypersensitivity / Q000209:etiology*; D005260:Female; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy
D003276:Contraceptives, Oral