NIAFAR, Mitra; JAMALI, Behrad; LOTFIBAKHSHAIESH, Nasrin; AGHAMOHAMMADZADEH, Naser; NADER, Nader. The role of metformin on serum vitamin B12 levels in patients with type 2 diabetes mellitus. The European Research Journal, [S. l.], v. 1, n. 1, p. 1–7, 2015. DOI: 10.18621/eurj.2015.1.1.1. Disponível em: https://eurj.org.tr/article/view/1. Acesso em: 5 apr. 2026.