Mechanism of action, safety and efficacy of intrauterine devices. Report of a WHO Scientific Group.
D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D008599:Menstruation Disturbances / Q000209:etiology; D000292:Pelvic Inflammatory Disease / Q000209:etiology; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000209:etiology; D014944:World Health Organization