title: A statistical study of the copper T and copper 7 intrauterine devices.
mesh_terms: D000293:Adolescent; D000328:Adult; D003300:Copper; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007239:Infections / Q000209:etiology; D007433:Intrauterine Device Expulsion / Q000009:adverse effects; D007434:Intrauterine Devices / Q000009:adverse effects; D010298:Parity; D011247:Pregnancy; D014592:Uterine Hemorrhage / Q000209:etiology
chemical_list: D003300:Copper