M. Irawati, F. A. Budimutiar, G. Darmawan, D. T. Budimutiar, and M. Simadibrata, “Prevalence of Helicobacter pylori infection in adult patients with dyspeptic symptoms in Abdi Waluyo Hospital Jakarta from January 2017 to December 2019”, InaJGHE, vol. 22, no. 1, pp. 37–41, May 2021.