Progestogen-only microdose followed by estrogen-progestogen combination, a new approach to oral contraception.
D000328:Adult; D002784:Cholesterol / Q000097:blood; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004357:Drug Synergism; D004997:Ethinyl Estradiol / Q000008:administration & dosage* / Q000009:adverse effects; D005260:Female; D006801:Humans; D008075:Lipoproteins, HDL / Q000097:blood; D008598:Menstruation / Q000187:drug effects; D009640:Norethindrone / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*; D000077563:Norethindrone Acetate
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D008075:Lipoproteins, HDL; D004997:Ethinyl Estradiol; D002784:Cholesterol; D000077563:Norethindrone Acetate; D009640:Norethindrone