1. Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele and Vita-Salute San Raffaele University, 20132 Milan, Italy
2. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20072 Milan, Italy
3. Department of Gastroenterology, Centro Hospitalar São João, 4200-319 Porto, Portugal
4. Department of Gastroenterology, CHRU-Nancy, University of Lorraine, 54000 Nancy, France
5. Inserm, NGERE, University of Lorraine, 54000 Nancy, France
6. Department of Medicine I, Agaplesion Markus Hospital, Goethe-University, 60323 Frankfurt am Main, Germany
7. Department of Medicine, Division of Gastroenterology, Western University, London, ON N6A 3K7, Canada
8. St Mark’s Hospital, Middlesex, Harrow HA1 3UJ, UK
9. Colorectal Surgery Unit, Hospital Universitário Cajuru, Pontificia Universidade Católica do Paraná (PUCPR), Curitiba 80215-901, Brazil
10. Ferring Pharmaceuticals, 1162 Saint-Prex, Switzerland
11. Digestive Diseases Unit, Rashid Hospital, Dubai 003206, United Arab Emirates
12. Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo 108-8642, Japan
13. Medizinische Klinik m. S. Gastroenterologie, Infektiologie und Rheumatologie, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10178 Berlin, Germany