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Practical approach to obtain the mid-sagittal plane of the fetal face at 11-13 weeks' gestation by two-dimensional ultrasound.
Luchi C, Persico N, Rembouskos G, Nicolaides KH.
Ultrasound Obstet Gynecol 2014;44:617-8. pdf -
Metopic suture in fetuses with trisomy 21 at 11 + 0 to 13 + 6 weeks of gestation.
Faro C, Wegrzyn P, Benoit B, Chaoui R, Nicolaides KH.
Ultrasound Obstet Gynecol 2006;27:286-9. -
Metopic suture in fetuses with holoprosencephaly at 11 + 0 to 13 + 6 weeks of gestation.
Faro C, Wegrzyn P, Benoit B, Chaoui R, Nicolaides KH.
Ultrasound Obstet Gynecol 2006;27:162-6.