Miranda, A. C. P., R. S. Machado, E. M. K. da Silva, and E. Kawakami. “Seroprevalence of Helicobacter Pylori Infection Among Children of Low Socioeconomic Level in São Paulo”. São Paulo Medical Journal, vol. 128, no. 4, July 2010, pp. 187-91, https://periodicosapm.emnuvens.com.br/spmj/article/view/1806.