Dhayal RK, Vishnoi SK, Jora R, Choudhary S. Prevalence of helicobacter pylori infection in children with Vitamin B12 Deficiency - A cross-sectional observational study. Asian J Med Sci [Internet]. 2021 Jul. 1 [cited 2024 May 6];12(7):42-6. Available from: https://www.nepjol.info/index.php/AJMS/article/view/35351