GE: Portuguese Journal of Gastroenterology, Pp 1-10 (2019) GE-Portuguese Journal of Gastroenterology, Volume: 26, Issue: 6, Pages: 404-413, Published: DEC 2019 Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP