“Effect of Vitamin-D Therapy in Retarding the Progression of Diabetic Nephropathy: A Randomized Double-Blind Placebo-Controlled Trial”, J Chittagong Med Coll Teachers Ass, vol. 35, no. 2, pp. 105–111, Dec. 2025, doi: 10.3329/jcmcta.v35i2.85953.