A modified sequential contraceptive.
D000328:Adult; D002582:Cervix Mucus / Q000187:drug effects; D002715:Chlormadinone Acetate / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology; D004338:Drug Combinations; D004717:Endometrium / Q000187:drug effects; D005260:Female; D005298:Fertility / Q000187:drug effects; D006801:Humans; D008234:Lynestrenol / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology; D008599:Menstruation Disturbances; D008656:Mestranol / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology
D004338:Drug Combinations; D002715:Chlormadinone Acetate; D008656:Mestranol; D008234:Lynestrenol