Perforation of the uterine wall by the Lippes loop. Its frequency and mechanism.
D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D011247:Pregnancy; D011248:Pregnancy Complications; D014592:Uterine Hemorrhage / Q000209:etiology; D014599:Uterus / Q000293:injuries*