title: Tarnished copper IUDs still safe and effective.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003267:Contraception; D003300:Copper; D003906:Developing Countries; D004194:Disease; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D007239:Infections; D007287:Inorganic Chemicals; D007434:Intrauterine Devices; D007435:Intrauterine Devices, Copper; D008670:Metals; D010100:Oxygen
chemical_list: D007287:Inorganic Chemicals; D008670:Metals; D003300:Copper; D010100:Oxygen
keywords: Contraception; Contraceptive Effectiveness; Contraceptive Methods; Copper; Developing Countries; Diseases; Family Planning; Infections; Ingredients And Chemicals; Inorganic Chemicals; Iud; Iud, Copper Releasing; Metals; Oxygen--side effects; Use-effectiveness