title: Long-term use of copper intrauterine devices.
authors.forename: I
authors.initials: I
authors.lastname: Sivin
mesh_terms: D005260:Female; D006801:Humans; D007435:Intrauterine Devices, Copper / Q000592:standards*; D013997:Time Factors; D014481:United States; D014486:United States Food and Drug Administration