1. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) Badalona Spain
2. Motility and Functional Gut Disorders Unit University Hospital Germans Trias i Pujol Badalona Spain
3. Department of Medicine Autonomous University of Barcelona Badalona Spain
4. Division of Gastroenterology University Hospital Zurich Zurich Switzerland
5. Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
6. Digestive System Research Unit University Hospital Vall d'Hebron Barcelona Spain
7. Division of Gastroenterology B AOUI Verona Verona Italy
8. UNC Center for Functional GI and Motility Disorders University of North Carolina Chapel Hill NC USA
9. Department of Gastroenterology UMR INSERM 1073 Rouen University Hospital Rouen France
10. Department of Physiology UMR INSERM 1073 & CIC INSERM 1404 Rouen University Hospital Rouen France
11. General Practice Faculty of Medical Sciences Newcastle University Newcastle UK
12. Department of Medicine Israelitic Hospital Hamburg Germany
13. Sant Adrià de Besòs (Barcelona) Catalan Institut of Health (ICS) La Mina Primary Health Care Centre Badalona Spain
14. Department of Surgery Division of General Surgery Medical University of Graz Graz Austria
15. Neurogastroenterology Group Centre for Neuroscience, Surgery and Trauma Blizard Institute Barts UK
16. The London School of Medicine & Dentistry Queen Mary University London London UK
17. Department of Internal Medicine & Clinical Nutrition Institute of Medicine Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
18. Division of Diabetes, Endocrinology & Gastroenterology Neurogastroenterology Unit, Wythenshawe Hospital University of Manchester Manchester UK