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Maxillary gap at 11-13 weeks' gestation: marker of cleft lip and palate.
Chaoui R, Orosz G, Heling KS, Sarut-Lopez A, Nicolaides KH.
Ultrasound Obstet Gynecol 2015;46:665-9. 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 -
First trimester umbilical venous Doppler sonography in chromosomally normal and abnormal fetuses.
Brown RN, Di Luzio L, Gomes C, Nicolaides KH.
J Ultrasound Med 1999;18:543-6.