SERUM VITAMIN D3 LEVELS IN A CROSS SECTION OF POPULATION ATTENDING OPD AT TERTIARY CARE HOSPITAL IN DEHRADUN, UTTARAKHAND. International Journal of Food and Nutritional Sciences, [S. l.], v. 14, n. 2, p. 1–9, 2025. Disponível em: https://www.ijfans.org/index.php/Journal/article/view/1331. Acesso em: 12 aug. 2026.