1. Discipline of Pharmacology & Therapeutics, NUI, Galway, Ireland
2. Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Italy
3. Department of Epidemiology Research, Statens Serum Institut, National Health Surveillance & Research, Denmark
4. General Surgery Unit, Second University of Naples, Italy
5. Service de Gastroentérologie, CHU de Bicêtre, Assistance Publique-Hôpitaux de Paris, Université Paris Sud, France
6. Department of General Internal Medicine I, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Kiel, Germany
7. Chelsea & Westminster Hospital, 369 Fulham Road, London, UK
8. Lisbon University & Higher School of Health Technology of Lisbon, Lisbon, Portugal
9. Hospital Cuf Descobertas, Lisbon, Portugal
10. Erasmus Medical Centre, Rotterdam, the Netherlands
11. Department of Gastroenterology and Center for IBD “Saint Panteleimon” Hospital, Nicea, Greece