Letter: Contraceptives and health.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D003863:Depression / Q000139:chemically induced; D005260:Female; D006261:Headache / Q000139:chemically induced; D006801:Humans; D014652:Vascular Diseases / Q000139:chemically induced
D003276:Contraceptives, Oral