1. Department of Internal Medicine, University Hospital Schleswig-Holstein, Kiel University , Kiel , Germany
2. University of Chicago Medicine Inflammatory Bowel Disease Center , Chicago, IL , USA
3. Institute of Digestive Disease, Department of Medicine and Therapeutics, LKS Institute of Health Science, The Chinese University of Hong Kong , Hong Kong
4. Department of Gastroenterology, CHRU-Nancy, University of Lorraine , Nancy , France
5. Inserm, NGERE, University of Lorraine , Nancy , France
6. Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital and Vita-Salute San Raffaele University , Milan , Italy
7. Pfizer Inc , New York, NY , USA
8. Pfizer Inc , Collegeville, PA , USA
9. Pfizer Inc , Oslo , Norway
10. Department of Internal Medicine III, Medical University of Vienna , Vienna , Austria
11. Susan and Leonard Feinstein Inflammatory Bowel Disease Clinical Center, Icahn School of Medicine at Mount Sinai , New York, NY , USA