Wahab, Abdul, Khalid Shahab, Muhib Rahman, Usman Ghani, and Muhammad Bilal. “Vitamin B12 Deficiency in Patients With Helicobacter Pylori Infection”. Biological and Clinical Sciences Research Journal 6, no. 5 (May 31, 2025): 417–420. Accessed April 22, 2026. https://bcsrj.com/ojs/index.php/bcsrj/article/view/2237.