Letter: Oral contraceptives and health.
D003276:Contraceptives, Oral / Q000009:adverse effects* / Q000494:pharmacology; D004341:Drug Evaluation; D004967:Estrogens / Q000009:adverse effects; D005260:Female; D005298:Fertility / Q000187:drug effects; D006801:Humans; D008487:Medical History Taking; D010352:Patient Dropouts; D011374:Progesterone / Q000009:adverse effects
D003276:Contraceptives, Oral; D004967:Estrogens; D011374:Progesterone