title: The CU-7: a metallic copper intrauterine contraceptive device.
mesh_terms: D003300:Copper / Q000494:pharmacology*; D005260:Female; D005306:Fertilization / Q000187:drug effects*; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy
chemical_list: D003300:Copper