Shadab, A., I. Hussain, P. K. Kandakurti, M. Ismail, A. L. O. Hashim, S. E. O. Hussein, and A. A. Elgadir. “Estimation of Serum Creatinine, Aspartate Aminotransferase, Alanine Transaminase, and Hemoglobin A1c% Levels Among Diabetic Patients Using Metformin/Dipeptide Peptidase-4 Inhibitor Combination and Insulin – A Cross-Sectional Study”. Open Access Macedonian Journal of Medical Sciences, vol. 10, no. B, Apr. 2022, pp. 959-65, doi:10.3889/oamjms.2022.9003.