1 Laboratory of Neuro-Immuno-Gastroenterology, Digestive System Research Unit, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Barcelona, Spain.
2 Department of Gastroenterology, Vall d'Hebron Hospital Universitari, Barcelona, Spain.
3 Facultad de Medicina, Universitat Autònoma de Barcelona, Bellaterra, Spain.
4 Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERHED), Instituto de Salud Carlos III, Madrid, Spain.
5 IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
6 Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.