Investigation of Some Extrinsic Factors Predisposing to Helicobacter Pylori-Associated Vitamin B12 Deficiency Anemia and Diagnosis and Treatment. Journal of Pharmaceutical Negative Results, [S. l.], p. 1541–1550, 2022. DOI: 10.47750/pnr.2022.13.S03.237. Disponível em: https://pnrjournal.com/index.php/home/article/view/1322.. Acesso em: 26 jun. 2026.