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Assessment of the fetal nasal bone at 11-14 weeks of gestation by three-dimensional ultrasound.
Rembouskos G, Cicero S, Longo D, Vandecruys H, Nicolaides KH.
Ultrasound Obstet Gynecol 2004;23:232-6. -
Nuchal translucency and other first-trimester sonographic markers of chromosomal abnormalities.
Nicolaides KH.
Am J Obstet Gynecol 2004;191:45-67.