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Frontomaxillary facial angle in fetuses with spina bifida at 11-13 weeks.
Lachmann R, Picciarelli G, Moratalla J, Green N, Nicolaides KH.
Ultrasound Obstet Gynecol 2010;36:268-71. -
Early prenatal diagnosis of triploidy.
Jauniaux E, Brown R, Snijders RJ, Noble P, Nicolaides KH.
Am J Obstet Gynecol 1997;176:550-4.