Al-aajem BMR. Association of Helicobacter pylori infection and vitamin B12 deficiency. GSC Biol. Pharm. Sci. [Internet]. 2019Nov.30 [cited 2024Aug.4];9(2):143-6. Available from: https://gsconlinepress.com/journals/index.php/gscbps/article/view/gscbps-2019-0143