Ali, U.A., Abbasi, W. and Huda, N.U. 2024. Vitamin B12 Deficiency among Cases of Helicobacter Pylori Gastritis: A Cross Sectional Study. Journal of Health and Rehabilitation Research. 4, 2 (May 2024), 553–556. DOI:https://doi.org/10.61919/jhrr.v4i2.907.