Intrauterine devices.
D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D000292:Pelvic Inflammatory Disease / Q000453:epidemiology; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000453:epidemiology; D013548:Sweden; D013785:Thailand; D006113:United Kingdom