TY - JOUR AN - 12 AU - Hyett,J. AU - Perdu,M. AU - Sharland,G. AU - Snijders,R. AU - Nicolaides,K.H. TI - Using fetal nuchal translucency to screen for major congenital cardiac defects at 10–14 weeks of gestation: population based cohort study. JO - BMJ PY - 1999 VL - 318 SP - 81-85 M2 - 81 ER -