Doppler ultrasound, Flow velocity variability, Heart rate variability, Umbilical artery,
Clinical Science
Department of Gynaecology & Obstetrics

Ursem, N.T.C, Struijk, P.C, Hop, W.C.J, Clark, E.B, Keller, B.B, & Wladimiroff, J.W. (1998). Heart rate and flow velocity variability as determined from umbilical Doppler velocimetry at 10-20 weeks of gestation. Clinical Science, 95(5), 539–545. doi:10.1042/CS19980042