title: [Doppler ultrasonography of umbilical artery blood flow and placental pathology].
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: W M
authors.initials: WM
authors.lastname: Li
mesh_terms: D001783:Blood Flow Velocity; D006801:Humans; D010920:Placenta / Q000473:pathology*; D014463:Ultrasonography; D014469:Umbilical Arteries / Q000000981:diagnostic imaging*