Thromboembolism, oral contraceptives, and cigarettes.
D000328:Adult; D000367:Age Factors; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004357:Drug Synergism; D005260:Female; D006801:Humans; D008297:Male; D008428:Maternal Mortality; D008875:Middle Aged; D012737:Sex Factors; D012907:Smoking; D013923:Thromboembolism / Q000209:etiology / Q000401:mortality*; D014481:United States
D003276:Contraceptives, Oral