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Uterine artery pulsatility index in the three trimesters of pregnancy: effects of maternal characteristics and medical history.
Tayyar A, Guerra L, Wright A, Wright D, Nicolaides KH.
Ultrasound Obstet Gynecol 2015;45:689-97. pdf -
Fetal right ventricular contraction and relaxation times at 11-13 weeks' gestation by speckle tracking imaging.
Persico N, Fabietti I, Baffero G, Fedele L, Nicolaides KH.
Ultrasound Obstet Gynecol 2014;43:284-90. pdf -
Tricuspid regurgitation in screening for trisomies 21, 18 and 13 and Turner syndrome at 11 + 0 to 13 + 6 weeks of gestation.
Kagan KO, Valencia C, Livanos P, Wright D, Nicolaides KH.
Ultrasound Obstet Gynecol 2009;33:18-22.