Oral contraceptive after 40.
D000328:Adult; D000367:Age Factors; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004739:England; D005260:Female; D006801:Humans; D009203:Myocardial Infarction / Q000139:chemically induced / Q000401:mortality*; D014852:Wales
D003276:Contraceptives, Oral