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Prenatal ultrasonographic diagnosis of nasal bone abnormalities in three fetuses with Down syndrome.
Sonek JD, Nicolaides KH.
Am J Obstet Gynecol 2002;186:139-41. -
Fetal nasal bone length in chromosomally normal and abnormal fetuses at 11-14 weeks of gestation.
Cicero S, Bindra R, Rembouskos G, Tripsanas C, Nicolaides KH.
J Matern Fetal Neonatal Med 2002;11:400-2.