Population Reports. Lower-dose pills.
D001943:Breast Neoplasms / Q000209:etiology; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage; D003278:Contraceptives, Oral, Hormonal / Q000008:administration & dosage* / Q000009:adverse effects; D003279:Contraceptives, Oral, Sequential / Q000008:administration & dosage; D003431:Cross-Cultural Comparison; D004305:Dose-Response Relationship, Drug; D004967:Estrogens / Q000008:administration & dosage; D005260:Female; D006801:Humans; D011372:Progestins / Q000008:administration & dosage; D012307:Risk Factors; D002583:Uterine Cervical Neoplasms / Q000209:etiology
D003277:Contraceptives, Oral, Combined; D003278:Contraceptives, Oral, Hormonal; D003279:Contraceptives, Oral, Sequential; D004967:Estrogens; D011372:Progestins