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Ultrasound screening for anencephaly at 10-14 of gestation.
Johnson SP, Sebire NJ, Snijders RJM, Tunkel S, Nicolaides KH.
Ultrasound Obstet Gynecol 1997;9:14-6. -
Body stalk anomaly at 10-14 weeks of gestation.
Daskalakis G, Sebire NJ, Jurkovic D, Snijders RJ, Nicolaides K.
Ultrasound Obstet Gynecol 1997;10:416-8.