[A study of uteroplacental blood flow using pulsed Doppler ultrasound].
D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy; D012039:Regional Blood Flow; D014463:Ultrasonography; D014599:Uterus / Q000098:blood supply*