Carlos Eduardo Oliveira dos Santos MD, PhD
Department of Endoscopy, Santa Casa de Caridade Hospital, Bagé, RS, Brazil.

Gabriel Malaman dos Santos
Department of Endoscopy, Santa Casa de Caridade Hospital, Bagé, RS, Brazil.

Júlio Carlos Pereira-Lima MD, PhD
Department of Gastroenterology and Endoscopy, Santa Casa Hospital, Porto Alegre, RS, Brazil.