Effectiveness of a sequential oral contraceptive tablet.
D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans; D008656:Mestranol / Q000009:adverse effects / Q000494:pharmacology*; D009640:Norethindrone / Q000009:adverse effects / Q000494:pharmacology*
D003276:Contraceptives, Oral; D008656:Mestranol; D009640:Norethindrone