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Prospective validation of first-trimester combined screening for trisomy 21.
Kagan KO, Etchegaray A, Zhou Y, Wright D, Nicolaides KH.
Ultrasound Obstet Gynecol 2009;34:14-8. -
Effect of deviation of nuchal translucency measurements on the performance of screening for trisomy 21.
Kagan KO, Wright D, Etchegaray A, Zhou Y, Nicolaides KH.
Ultrasound Obstet Gynecol 2009;33:657-64. -
Choroid plexus cyst, intracardiac echogenic focus, hyperechogenic bowel and hydronephrosis in screening for trisomy 21 at 11 + 0 to 13 + 6 weeks.
Dagklis T, Plasencia W, Maiz N, Duarte L, Nicolaides KH.
Ultrasound Obstet Gynecol 2008;31:132-5.