title: The first year of clinical experience with the copper T intrauterine contraceptive system in the United States and Canada.
mesh_terms: D000328:Adult; D003300:Copper; D005069:Evaluation Studies as Topic; D005260:Female; D005549:Foreign-Body Reaction; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D011095:Polyethylenes; D011247:Pregnancy; D014626:Vaginal Smears
chemical_list: D011095:Polyethylenes; D003300:Copper