title: The safety of intrauterine devices.
mesh_terms: D000740:Anemia / Q000209:etiology; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D008598:Menstruation; D008722:Methods; D000292:Pelvic Inflammatory Disease / Q000209:etiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D012306:Risk; D014592:Uterine Hemorrhage / Q000209:etiology