Shabnam Akhtar, Tabish Akbar, Danish Nawaz, Syed Ghulam Akbar, Sahar Anjum, and Ayaz Hussain, “Serum Vitamin D Status, Dietary Calcium Intake and Insulin Resistance among Adults with Prediabetes”, IJPRT, vol. 16, no. 1, pp. 4819–4824, Jun. 2026.