Riffat Naeem, Farah Rafique, Hamail Amin, Andleeb Badar, Hira Sohail, Farhat Ijaz. “Evaluating Deficiency of Vitamin B12 and Risk Factors in Healthy Infants”. Pakistan Journal of Medical & Health Sciences 16, no. 03 (May 19, 2022): 1120. Accessed November 21, 2024. https://pjmhsonline.com/index.php/pjmhs/article/view/851.