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Umbilical cord cysts in early pregnancy.
Ross JA, Jurkovic D, Zosmer N, Jauniaux E, Hacket E, Nicolaides KH.
Obstet Gynecol 1997;89:442-5. -
The prevalence of non-viable pregnancy at 10-13 weeks of gestation.
Pandya PP, Snijders RJ, Psara N, Hilbert L, Nicolaides KH.
Ultrasound Obstet Gynecol 1996;7:170-3.