Oral contraception.
D003276:Contraceptives, Oral / Q000008:administration & dosage / Q000009:adverse effects* / Q000145:classification; D003281:Contraceptives, Postcoital; D005260:Female; D006801:Humans; D008599:Menstruation Disturbances
D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital