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Dilemmas in the management of twins discordant for anencephaly diagnosed at 11 + 0 to 13 + 6 weeks of gestation.
Vandecruys H, Avgidou K, Surerus E, Flack N, Nicolaides KH.
Ultrasound Obstet Gynecol 2006;28:653-8. -
Single umbilical artery at 11-14 weeks' gestation: relation to chromosomal defects.
Rembouskos G, Cicero S, Longo D, Sacchini C, Nicolaides KH.
Ultrasound Obstet Gynecol 2003;22:567-70.