Al Dossari, K., S. Kamal, A. Al-Malki, and J. Al-Zahrani. “Prevalence and Associated Factors of Pylori Infection in Symptomatic Patients Admitted to A Major Hospital in Saudi Arabia”. Journal of Health Informatics in Developing Countries, vol. 10, no. 1, Dec. 2016, https://mail.jhidc.org/index.php/jhidc/article/view/147.