KNOWLEDGE AND AWARENESS OF VITAMIN B12 DEFICIENCY AMONG DIABETIC PATIENTS ON METFORMIN IN SAUDI ARABIA: A CROSS-SECTIONAL STUDY. CAHIERS MAGELLANES-NS, [S. l.], p. 568–583, 2025. Disponível em: https://cahiersmagellanes.com/index.php/CMN/article/view/1240.. Acesso em: 26 apr. 2025.