Kırlı, İsmail, Veli Can Yılmaz, Cem Şahin, Ceren Deniz Salman, Emine Neşe Yeniçeri, and Hasan Tunca. “Effect of Metformin Usage on Vitamin B12 Deficiency in Patients With Type 2 Diabetes Mellitus”. HEALTH SCIENCES QUARTERLY 5, no. 1 (January 25, 2025): 43–50. Accessed February 5, 2025. https://journals.gen.tr/index.php/jsp/article/view/2580.