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Fetal mild hydronephrosis and chromosomal defects: relation to maternal age and gestation.
Snijders RJ, Sebire NJ, Faria M, Patel F, Nicolaides KH.
Fetal Diagn Ther 1995;10:349-55. -
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.