Kalantari M, Rashidi J. Investigating the Use of Prenatal Cell-Free DNA Laboratory Test in Maternal Blood by NIPT Method for Trisomy 21 Diagnosis. FRSJ [Internet]. 2025 Sep. 11 [cited 2026 Apr. 6];1(2):49-60. Available from: https://frsj.farau.edu.af/index.php/frsj/article/view/33