On oral contraceptive safety: cardiovascular problems.
D002318:Cardiovascular Diseases / Q000139:chemically induced* / Q000401:mortality; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011446:Prospective Studies; D012189:Retrospective Studies
D003276:Contraceptives, Oral