Comparative quantitation of menstrual blood loss with a d-norgestrel-releasing iud and a Nova-T-copper device.
D000328:Adult; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D007436:Intrauterine Devices, Medicated; D008598:Menstruation / Q000187:drug effects*; D009644:Norgestrel / Q000494:pharmacology*
D009644:Norgestrel