Ten years' experience in the use of the intrauterine ring.
D000024:Abortion, Illegal; D000032:Abortion, Therapeutic; D001799:Blood Sedimentation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007247:Infertility, Female / Q000209:etiology; D007434:Intrauterine Devices; D008598:Menstruation; D008796:Metrorrhagia