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Frontomaxillary facial angle at 11 + 0 to 13 + 6 weeks' gestation-reproducibility of measurements.
Plasencia W, Dagklis T, Sotiriadis A, Borenstein M, Nicolaides KH.
Ultrasound Obstet Gynecol 2006;29:18-21. -
Three-dimensional evaluation of mid-facial hypoplasia in fetuses with trisomy 21 at 11 + 0 to 13 + 6 weeks of gestation.
Dagklis T, Borenstein M, Peralta CF, Faro C, Nicolaides KH.
Ultrasound Obstet Gynecol 2006;28:261-5.