Rehman, Safia, Naveed Sharif, Samiyah Rahman, Shams Suleman, Ambreen Gul, and Muhammad Abbas. 2019. “VITAMIN B12 DEFICIENCY AMONG PATIENTS WITH MEGALOBLASTIC ANEMIA”. Journal of Medical Sciences 27 (2):103-6. https://jmedsci.com/index.php/Jmedsci/article/view/672.