Adverse effect of an overdistended bladder on first-trimester sonography.
D000033:Abortion, Threatened / Q000175:diagnosis*; D004106:Dilatation; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D014463:Ultrasonography / Q000379:methods*; D001743:Urinary Bladder