Carlos, A. B. M., V. E. Costa, R. Kobayasi, and M. A. M. Rodrigues. “Prevalence of Helicobacter Pylori Infection Among Asymptomatic Children in Southeastern Brazil: A Cross-Sectional Study”. São Paulo Medical Journal, vol. 140, no. 5, Sept. 2022, pp. 719-22, https://periodicosapm.emnuvens.com.br/spmj/article/view/1038.