Choice of contraceptives.
D002986:Clinical Trials as Topic; D003267:Contraception / Q000379:methods*; D003273:Contraceptive Devices; D003276:Contraceptives, Oral / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D017410:Practice Guidelines as Topic
D003276:Contraceptives, Oral