Kalantari, Mustafa, and Jawid Rashidi. “Investigating the Use of Prenatal Cell-Free DNA Laboratory Test in Maternal Blood by NIPT Method for Trisomy 21 Diagnosis”. Farah Research and Scientific Journal 1, no. 2 (September 11, 2025): 49–60. Accessed April 6, 2026. https://frsj.farau.edu.af/index.php/frsj/article/view/33.