Otegbayo, J., O. Oluwasola, A. Yakubu, G. Odaibo, and O. Olaleye. “HELICOBACTER PYLORI SEROLOGY AND EVALUATION OF GASTRODUODENAL DISEASE IN NIGERIANS WITH DYSPEPSIA”. African Journal of Clinical and Experimental Microbiology, vol. 5, no. 1, June 2004, pp. 131-8, doi:10.4314/ajcem.v5i1.7366.