Update on the intrauterine contraceptive device.
Bergsjø
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D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects / Q000706:statistics & numerical data; D007435:Intrauterine Devices, Copper; D000292:Pelvic Inflammatory Disease / Q000453:epidemiology; D012307:Risk Factors