Association of serum vitamin D and parathormone levels in patients of type 2 diabetes mellitus with diabetic retinopathy. Bangabandhu Sheikh Mujib Medical University Journal [Internet]. 2017 May 22 [cited 2026 Jun. 26];10(2):61-5. Available from: https://www.banglajol.info/index.php/BSMMUJ/article/view/32287