sama F. Shaalan, Khalil A. El-Halafawy and Ahmed A. Raouf. “EARLY DETECTION OF THE 21st CHOMOSOME TRISOMY BY AFP, β-HCG AND UE3”. Pakistan Journal of Biotechnology 7, no. 1-2 (April 15, 2021): 91–99. Accessed November 23, 2024. https://pjbt.org/index.php/pjbt/article/view/317.