Oral contraceptives and the risk of myocardial infarction.
Shapiro
Samuel
S
D015982:Bias; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000009:adverse effects; D009203:Myocardial Infarction / Q000139:chemically induced*; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D011795:Surveys and Questionnaires
D003276:Contraceptives, Oral; D016912:Levonorgestrel