Gerardo Gonz?lez-Gonz?lez J, Cesar Solis R, D?az Gonz?lez-Colmenero A, Raygoza-Cortez K, Moreno-Pe?a PJ, S?nchez AL, McCoy RG, Singh Ospina N, Maraka S, Brito JP, Rodriguez-Gutierrez R. Effect of metformin on microvascular outcomes in patients with type 2 diabetes: A systematic review and meta-analysis. Diabetes Res Clin Pract. 2022 Apr; 186:109821.