title: IUDs safe and effective at nine years of continuous use.
mesh_terms: D002986:Clinical Trials as Topic; D003267:Contraception; D003268:Contraception Behavior; D004194:Disease; D005193:Family Planning Services; D006077:Government Agencies; D007239:Infections; D007390:International Agencies; D007434:Intrauterine Devices; D007435:Intrauterine Devices, Copper; D009938:Organizations; D000292:Pelvic Inflammatory Disease; D012106:Research; D014480:United Nations; D014944:World Health Organization
keywords: Adnexitis; Clinical Research; Clinical Trials; Contraception; Contraceptive Effectiveness; Contraceptive Methods; Contraceptive Usage; Diseases; Family Planning; Government Agencies; Infections; International Agencies; Iud; Iud, Copper Releasing; Organizations; Pelvic Inflammatory Disease; Reproductive Tract Infections; Research Methodology; Un; Who; World