-
Assessment of umbilical arterial and venous flow using color Doppler.
Lees C, Albaiges G, Deane C, Parra M, Nicolaides KH.
Ultrasound Obstet Gynecol 1999;14:250-5. -
Fetal venous, intracardiac, and arterial blood flow measurements in intrauterine growth retardation: relationship with fetal blood gases.
Hecher K, Snijders R, Campbell S, Nicolaides KH.
Am J Obstet Gynecol 1995;173:10-5.