HUDA ALI4*, F. H. O. M. W. I. E. A. Association between Helicobacter pylori infection and increased risk of typhoid fever in Khartoum- Sudan. Journal of Biomedical and Pharmaceutical Research, [S. l.], v. 4, n. 4, 2017. Disponível em: http://jbpr.in/index.php/jbpr/article/view/218. Acesso em: 2 apr. 2026.