Ultrasonic assessment of cause of genital bleeding during pregnancy.
D000033:Abortion, Threatened / Q000175:diagnosis; D005260:Female; D005328:Fetal Viability; D006801:Humans; D010922:Placenta Diseases / Q000175:diagnosis; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D011379:Prognosis; D014463:Ultrasonography