Is the Use of Metformin Associated with Vitamin B12 Deficiency in Hospitalized Patients?. Journal of Clinical Nutrition and Food Science, [S. l.], v. 2, n. 1, 2019. Disponível em: https://somatopub.com/index.php/JCNFS/article/view/262. Acesso em: 31 oct. 2026.