Letter: I.U.D. and hydrorrhoea.
D000653:Amniotic Fluid; D003656:Decidua; D005321:Extraembryonic Membranes; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology*; D014591:Uterine Diseases / Q000209:etiology*