1. Department of Gastroenterology, Hospital Beatriz Ângelo, Loures, Portugal
2. Department of Medicine, Division of Gastroenterology, Mater Dei Hospital, Msida, Malta
3. Department of Internal Medicine and Integrative Gastroenterology, Kliniken Essen-Mitte and Chair for Integrative Medicine and Translational Gastroenterology, Klinikum Bamberg, University Duisburg-Essen, Germany
4. School of Psychology, Deakin University Geelong, Burwood, Australia
5. Department of Gastroenterology, IBD Unit, University Hospital Santiago De Compostela (CHUS), Santiago De Compostela, Spain
6. Department of Gastroenterology, St. Vincent’s Hospital Melbourne, Fitzroy, Melbourne, Australia
7. IBD Centre, Department of Gastroenterology, Humanitas Clinical and Research Institute, Rozzano, Milan, Italy
8. Department of Gastroenterology and Hepatology, Division of Internal Medicine, University and Medical School of Ioannina, Ioannina, Greece
9. Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
10. Department of Gastroenterology, Oslo University Hospital, and Department of Nursing Science, Institute of Health and Society, University of Oslo, Oslo, Norway
11. Department of Advanced Medical and Surgical Sciences, Università degli Studi della Campania “Luigi Vanvitelli”, Naples, Italy
12. Department of Gastroenterology and Internal Medicine, Haaglanden Medisch Centrum, The Hague, The Netherlands
13. Gastroenterology and Hepatology Center, Zurich, Switzerland