title: Experience with three different models of the Copper T intrauterine contraceptive device in nulliparous women.
mesh_terms: D000293:Adolescent; D000328:Adult; D003300:Copper / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007434:Intrauterine Devices; D010298:Parity; D011247:Pregnancy
chemical_list: D003300:Copper