Is vitamin B12 deficiency responsible for neuropathy in people with type 2 diabetes on metformin?. International Journal of Biomedical Research, [S. l.], v. 10, n. 8, p. e5233, 2019. DOI: 10.7439/ijbr.v10i8.5233. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/5233. Acesso em: 8 mar. 2026.