Khalaf, Shihab Ahmed. “Vitamin D in Childhood Beyond Bone Health: A Review of Its Roles in Immunity, Metabolism, and Neurodevelopment”. International Journal of Integrative and Modern Medicine 3, no. 12 (December 25, 2025): 290–302. Accessed October 5, 2026. https://medicaljournals.eu/index.php/IJIMM/article/view/3003.