-
Frontomaxillary facial angle in fetuses with trisomy 21 at 11+0-13+6 weeks.
Sonek J, Borenstein M, Dagklis T, Persico N, Nicolaides KH.
Am J Obstet Gynecol 2007;196:271. -
First-trimester screening for trisomy 21 using nuchal translucency and nasal bone evaluations in a selected and an unselected population.
Sonek J, Cicero S, Nicolaides K.
Am J Obstet Gynecol 2007;196:19.