M. A. Sarwar, M. S. Farooq, M. Irfan, F. Mehboob, and Muhammad Saqib, “Assessment of Vitamin D and Calcium Levels in Type 2 Diabetes Mellitus”, IJBR, vol. 3, no. 7, pp. 699–704, Jul. 2025, doi: 10.70749/ijbr.v3i7.2077.