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SERUM VITAMIN D3 LEVELS IN A CROSS SECTION OF POPULATION ATTENDING OPD AT TERTIARY CARE HOSPITAL IN DEHRADUN, UTTARAKHAND. IJFANS [Internet]. 2025 Jan. 1 [cited 2026 Aug. 9];14(2):1-9. Available from: https://www.ijfans.org/index.php/Journal/article/view/1331