“A RETROSPECTIVE COHORT OF VITAMIN D DEFICIENCY ANALYSIS AND GLYCATED HEMOGLOBIN (HBA1C) LEVELS ASSOCIATIONS IN TYPE 2 DIABETES MELLITUS PATIENTS” (2025) The Research of Medical Science Review, 3(2), pp. 556–566. Available at: https://medicalsciencereview.com/index.php/Journal/article/view/636 (Accessed: 18 October 2026).