1. Motility and Functional Gut Disorders Unit University Hospital Germans Trias i Pujol Centro de Investigación Biomedica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) Autonomous University of Barcelona Badalona Spain
2. Gastroenterology Department CHU de Bordeaux Centre Medico‐chirurgical Magellan Hôpital Haut‐Lévêque Université de Bordeaux INSERM CIC 1401 Bordeaux France