Contraception with a norethisterone-releasing IUD. Plasma levels of norethisterone and its influence on the ovarian function.
D000328:Adult; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D007436:Intrauterine Devices, Medicated; D009640:Norethindrone / Q000008:administration & dosage* / Q000097:blood / Q000627:therapeutic use; D010060:Ovulation
D009640:Norethindrone