1 Gastroenterology and Hepatology Department, Centro Hospitalar e Universitário de São João; World Gastroenterology Organization (WGO) Porto Training Center, Portugal. isabelmng@hotmail.com.
2 Gastroenterology and Hepatology Department, Centro Hospitalar e Universitário de São João; World Gastroenterology Organization (WGO) Porto Training Center, Portugal. edu.gil.pinto@gmail.com.
3 Pathology Department, Centro Hospitalar Universitário de São João; Instituto de Investigação e Inovação em Saúde (i3S) and Institute of Molecular Pathology and Immunology, University of Porto (Ipatimup); Pathology Department, Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal. irene.gullo12@gmail.com.
4 Gastroenterology and Hepatology Department, Centro Hospitalar e Universitário de São João; World Gastroenterology Organization (WGO) Porto Training Center, Portugal. guilhermemacedo59@gmail.com.