Hatem N, Rosyidi R, Sami M, Tariq S, Wulandari P. A Cross-Sectional Study on Vitamin D Deficiency as a Risk Factor for Depression in the Elderly. Avicenna J Health Sci. [Internet]. 2024 Dec. 31 [cited 2025 Oct. 28];1(4). Available from: https://www.avicennajhs.com/index.php/ajhs/article/view/50