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First-trimester ultrasound screening for chromosomal defects.
Snijders RJ, Johnson S, Sebire NJ, Noble PL, Nicolaides KH.
Ultrasound Obstet Gynecol 1996;7:216-26. -
Fetal karyotyping in twin pregnancies: selection of technique by measurement of fetal nuchal translucency.
Sebire NJ, Noble PL, Psarra A, Papapanagiotou G, Nicolaides KH.
BJOG 1996;103:887-90. -
Fetal heart rate and umbilico-placental Doppler flow velocity waveforms in early pregnancies with a chromosomal abnormality and/or an increased nuchal translucency thickness.
Jauniaux E, Gavrill P, Kuhn P, Kurdi W, Hyett J, Nicolaides KH.
Hum Reprod 1996;11:435-9.