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Maxillary gap at 11-13 weeks' gestation: marker of cleft lip and palate.
Chaoui R, Orosz G, Heling KS, Sarut-Lopez A, Nicolaides KH.
Ultrasound Obstet Gynecol 2015;46:665-9. pdf -
A case of body stalk anomaly at 10 weeks of gestation.
Paul C, Zosmer N, Jurkovic D, Nicolaides K.
Ultrasound Obstet Gynecol 2001;17:157-9.