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One-stage screening for pregnancy complications by color doppler assessment of the uterine arteries at 23 weeks' gestation.
Albaiges G, Missfelder-Lobos H, Lees C, Parra M, Nicolaides KH.
Obstet Gynecol 2000;96:559-64. -
Assessment of fetal compromise by Doppler ultrasound investigation of the fetal circulation: arterial, intracardiac and venous blood flow velocity studies.
Hecher K, Campbell S, Doyle P, Harrington K, Nicolaides KH.
Circulation 1995;91:129-38.