title: Letter: Pregnancy and intrauterine device.
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology; D005260:Female; D005313:Fetal Death / Q000209:etiology; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000209:etiology