Two thousand woman-years' experience with a sequential contraceptive. A more effective method of taking a sequential contraceptive.
D000085:Acetates; D000293:Adolescent; D000328:Adult; D002715:Chlormadinone Acetate / Q000008:administration & dosage*; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D004412:Dysmenorrhea; D005260:Female; D006801:Humans; D008598:Menstruation; D008656:Mestranol / Q000008:administration & dosage*; D011247:Pregnancy; D012189:Retrospective Studies; D013997:Time Factors; D014626:Vaginal Smears
D000085:Acetates; D003276:Contraceptives, Oral; D002715:Chlormadinone Acetate; D008656:Mestranol