1. Division of Gastroenterology, Hospital Beatriz Ângelo , Loures , Portugal
2. Division of Gastroenterology, Hospital da Luz , Lisbon , Portugal
3. Faculdade de Medicina, Universidade de Lisboa , Lisbon , Portugal
4. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai , New York, NY , USA
5. CRESS Inserm UMR1153, ECSTRRA team, Université Paris-Cité Hôpital Saint-Louis , Paris , France