Asif Sagheer, Sadaf Saghir, Muhammad Bilal Akbar, Qamar Sajad, Iqra Iqbal. “Association Between Serum Ferritin, Vitamin D Levels, and Glycemic Control in Patients With Type 2 Diabetes Mellitus”. Pakistan Journal of Medical & Health Sciences, vol. 17, no. 07, Aug. 2023, p. 228, doi:10.53350/pjmhs2023177228.