Zhao, B., Z. Li, Z. He, X. Zhou, Y. Yu, K. Ren, and P. Yan. “Metformin and Lactic Acidosis in Diabetic Patients”. Journal of Endocrinology Research, vol. 3, no. 1, Apr. 2021, pp. 21-26, doi:10.30564/jer.v3i1.2849.