Oral contraceptive hazards--1981.
D000328:Adult; D002318:Cardiovascular Diseases / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D012107:Research Design; D012306:Risk; D013923:Thromboembolism / Q000139:chemically induced*
D003276:Contraceptives, Oral