1. Επίσημη ιστοσελίδα Mayo Clinic, www.mayoclinic.org/tests-procedures/first-trimester-screening/multimedia/nuchal-translucency-measurement/img-20007028
2. www.webmd.com/baby/first-trimester-screening-nuchal-translucency-blood-test
3. K. H. Nicolaides, G. Azar, D. Byrne, C. Mansur, K. Marks. Fetal nuchal translucency: ultrasound screening for chromosomal defects in first trimester of pregnancy.British Medical Journal, 1992; 304