1. Motility and Functional Gut Disorders Unit University Hospital Germans Trias i Pujol Badalona Spain
2. Autonomous University of Barcelona Barcelona Spain
3. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) Barcelona Spain
4. Digestive System Research Unit University Hospital Vall d'Hebrón Barcelona Spain