title: A study on the long-term effect of the intrauterine contraceptive device.
mesh_terms: D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D007492:Iran; D011127:Polyps / Q000209:etiology; D013997:Time Factors; D002577:Uterine Cervical Diseases / Q000209:etiology; D014626:Vaginal Smears