[A new concept in contraception].
D003267:Contraception; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D008598:Menstruation / Q000187:drug effects; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology
D011374:Progesterone
Ein neues Konzept der Kontrazeption