Affiliations

• ¹ Federal University of Juiz de Fora, Juiz de Fora, Brazil.
• ² Porto Alegre Health Science's Federal University, Porto Alegre, Brazil.
• ³ Federal University of Pernambuco, Recife, Brazil.
• ⁴ Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
• ⁵ Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
• ⁶ Department of Endoscopy, Barretos Cancer Hospital, Barretos, Brazil.
• ⁷ Department of Gastroenterology and Advanced Endoscopy, Ansh Clinic, Gujarat, India.
• ⁸ Endoscopy Unit, Instituto do Câncer, Department of Gastroenterology of the University of São Paulo, São Paulo, Brazil; National Council for Scientific and Technological Development, Brasilia, Brazil.