Hyett, J., Perdu, M., Sharland, G., Snijders, R., & Nicolaides, K. H. (1999). Using fetal nuchal translucency to screen for major congenital cardiac defects at 10-14 weeks of gestation: Population based cohort study. British Medical Journal.

Hyett, Jon, Marc Perdu, Gurleen Sharland, Rosalinde Snijders, a Kypros H. Nicolaides. Using Fetal Nuchal Translucency to Screen for Major Congenital Cardiac Defects At 10-14 Weeks of Gestation: Population Based Cohort Study. British Medical Journal, 1999.

Hyett, Jon, et al. Using Fetal Nuchal Translucency to Screen for Major Congenital Cardiac Defects At 10-14 Weeks of Gestation: Population Based Cohort Study. British Medical Journal, 1999.