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Increased fetal nuchal translucency: possible association with esophageal atresia.
Brown RN, Nicolaides KH.
Ultrasound Obstet Gynecol 2000;15:531-2. -
First-trimester determination of fetal gender by ultrasound.
Efrat Z, Akinfenwa Y, Nicolaides KH.
Ultrasound Obstet Gynecol 1999;13:305-7.