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