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Cardiac defects in chromosomally normal fetuses with abnormal ductus venosus blood flow at 10-14 weeks.
Matias A, Huggon I, Areias JC, Montenegro N, Nicolaides KH.
Ultrasound Obstet Gynecol 1999;14:307-10. -
Nuchal translucency thickness and crown-rump length in twin pregnancies with chromosomally abnormal fetuses.
Pandya PP, Hilbert F, Snijders RJM, Nicolaides KH.
J Ultrasound Med 1995;14:565-8.