Muhammad Amin1, Jahan Sardar, Muhammad Nadeem, Shafqat Huma, Memoona Gulzar, Momal Rasheed, M. Ibrahim Khan. “Frequency of Vitamin B12 Deficiency Amongst Elderly Patients Presenting With Dementia”. Pakistan Journal of Medical & Health Sciences 16, no. 06 (August 18, 2022): 705. Accessed July 17, 2024. https://pjmhsonline.com/index.php/pjmhs/article/view/2006.