Ogata, S. K., Kawakami, E., Patrício, F. R. S., Pedroso, M. Z., & Santos, A. M. (2001). Evaluation of invasive and non-invasive methods for the diagnosis of Helicobacter pylori infection in symptomatic children and adolescents. São Paulo Medical Journal, 119(2), 67–71. Retrieved from https://periodicosapm.emnuvens.com.br/spmj/article/view/2751