[Changes of the menstrual cycle by ST-613 (Sophia-A)].
D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects*; D008656:Mestranol / Q000494:pharmacology*; D009640:Norethindrone / Q000494:pharmacology*
D008656:Mestranol; D009640:Norethindrone