Jon Hyett, Marc Perdu, Gurleen Sharland, Rosalinde Snijders, Kypros H Nicolaides
Hyett J, Perdu M, Sharland G, Snijders R, Nicolaides K H.
Using fetal nuchal translucency to screen for major congenital cardiac defects at 10-14 weeks of gestation: population based cohort study
BMJ 1999; 318 :81
doi:10.1136/bmj.318.7176.81