V. . Raja, N. . Afzal, N. . Roy, J. ur . Rehman, and B. K. . Avinash, “Frequency of Vitamin D Deficiency Among Patients of Multiple Sclerosis in Pakistan”, jmhs, vol. 1, no. 1, pp. 17–22, Nov. 2020, Accessed: Mar. 13, 2026. [Online]. Available: https://al-kindipublishers.org/index.php/jmhs/article/view/755