زيدان ريم, ربا سلمان, and ربا حمدان. 2022. “Comparison Sitagliptin/Metformin Combination Therapy With Metformin Monotherapy in Patients With Type 2 Diabetes Mellitus”. Tishreen University Journal -Medical Sciences Series 44 (5):313-23. https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/13496.