Pregnancy and the intrauterine contraceptive device.
D000022:Abortion, Spontaneous; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D010298:Parity; D011247:Pregnancy; D011271:Pregnancy, Ectopic; D011446:Prospective Studies