[Methods for evaluating placental circulation].
Leiberman
J R
JR
Kopernik
G
G
D001775:Blood Circulation / Q000502:physiology*; D005260:Female; D005312:Fetal Blood / Q000502:physiology*; D006801:Humans; D010920:Placenta; D011247:Pregnancy; D014463:Ultrasonography / Q000706:statistics & numerical data*