Peixoto, B. D. O.; Gonçalves, M. A.; Gonçalves, T. F. R. .; Sá Martins, A. A. . Metformin and Vitamin B12 Deficiency – What Is the Evidence?. Scr Med 2024, 55 (3), 379-384. https://doi.org/10.5937/scriptamed55-48795.