Olorode, D. O. A. ., Ogba, O. M. ., & Ebisin, W. E. . (2021). Prevalence of Helicobacter Pylori Antibody among Outpatients of Federal Medical Center, Yenagoa, Niger Delta Region of Nigeria. International Journal of Medical Science and Clinical Invention, 8(07), 5521–5527. https://doi.org/10.18535/ijmsci/v8i07.02