Rahman, Aminur, Abul Hasnat Md Russel, Sabina Yasmin, Mohammed Nazmul Huq, Mohammad Shahidul Islam Bhuiyan, and Farhana Jannat. “Association Between Vitamin D deficiency and Cognitive Function in the Elderly Patient in a Tertiary Care Hospital, Bangladesh”. Bangladesh Journal of Medicine 37, no. 1 (January 19, 2026): 41–51. Accessed January 25, 2026. https://www.banglajol.info/index.php/BJMED/article/view/86716.