[A 5-year follow-up study of Shanghai copper-V 200 IUD and observations on its long-term use].
D003300:Copper; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007435:Intrauterine Devices, Copper; D011247:Pregnancy; D012995:Solubility; D013997:Time Factors
D003300:Copper