AGARWAL, P.; MITAL, P.; MEENA, V. K.; MITAL, P.; NAWAL, C. L.; GOYAL, L. K. A comparative study of levels of vitamin B12 in patients of type 2 diabetes mellitus on metformin and not on metformin at tertiary care center. International Journal of Advances in Medicine, [S. l.], v. 3, n. 3, p. 759–763, 2016. DOI: 10.18203/2349-3933.ijam20162531. Disponível em: https://www.ijmedicine.com/index.php/ijam/article/view/142. Acesso em: 11 oct. 2025.