The nurses' health study: current findings.
D001943:Breast Neoplasms / Q000235:genetics; D003276:Contraceptives, Oral / Q000009:adverse effects; D005260:Female; D006306:Health Surveys; D006801:Humans; D009203:Myocardial Infarction / Q000139:chemically induced; D009726:Nurses; D014481:United States
D003276:Contraceptives, Oral