¹Department of Gastroenterology, Sheba Medical Center, Ramat Gan, Israel, ²Department of Diagnostic Imaging, Sheba Medical Center, Ramat Gan, Israel

¹Queen Elizabeth University Hospital, Department of Gastroenterology, Glasgow, UK, ²Queen Elizabeth University Hospital, Department of Surgery, Glasgow, UK

¹Instituto Português de Oncologia de Lisboa, Gastrenterologia, Lisboa, Portugal, ²Hospital de Santa Maria, Gastrenterologia, Lisboa, Portugal

Shanghai Ninth People’s Hospital- Shanghai Jiao Tong University School of Medicine Department of general surgery, Shanghai Ninth People’s Hospital- Shanghai Jiao Tong University School of Medicine, Department of general surgery, shanghai, China

¹L’altrastatistica Srl, for GB Pharma Services and Consulting S.r.l, Rome, Italy, ²Clinical Research and Development Consultants, S.r.l., Sesto Fiorentino, Italy, ³GB Pharma Services and Consulting, S.r.l., Pavia, Italy, ⁴Beingpharma, S.r.l, Milano, Italy

¹Hyogo College of Medicine, Department of Intestinal Inflammation Research, Hyogo, Japan, ²Hyogo College of Medicine, Division of Internal Medicine- Department of Inflammatory Bowel Disease, Hyogo, Japan

La Rabta Hospital Tunis El Manar University, Department of Gastroenterology A, Tunis, Tunisia

Inselspital Bern, Gastroenterology- Clinical for Visceral Surgery and Medicine, Bern, Switzerland

¹Mater Dei Hospital- Malta, Department of Medicine, Kirkop, Malta, ²Mater Dei Hospital- Malta, Department of Gastroenterology, Msida, Malta

¹Unit for Clinical Nutrition, Department of Gastroenterology and Hepatology, Zagreb, Croatia, ²Clinical Hospital Centre Zagreb, Department of Gastroenterology and Hepatology, Zagreb, Croatia, ³Zagreb School of Medicine, University of Zagreb, Zagreb, Croatia

¹Inflammatory Bowel Disease Center, University of Chicago Medicine, Chicago, Illinois, USA, ²Department of Pediatrics and Medicine- Icahn School of Medicine at Mount Sinai, New York, New York, USA, ³IBD Center- Department of Gastroenterology- Humanitas Research Hospital, Rozzano, Milan, Italy, ⁴IBD Group- Botucatu Medical School- São Paulo State University, São Paulo, Brazil, Brazil, ⁵Pfizer Inc., Lima, Peru, Peru, ⁶Pfizer Inc., Collegeville, Pennsylvania, USA, ⁷Pfizer Inc., New York, New York, USA

¹University Hospital Santiago De Compostela CHUS, Department of Gastroenterology- IBD Unit, Santiago De Compostela, Spain, ²University Hospital Santiago De Compostela CHUS, Department of Pharmacy, Santiago De Compostela, Spain

¹Janssen Research and Development- LLC, Clinical Pharmacology, Horsham- PA, USA, ²Connecticut Children’s Medical Center, Pediatrics, Hartford- CT, USA, ³Shaare Zedek Medical Center, Pediatrics, Jerusalem, Israel, ⁴SickKids Hospital, Pediatrics, Toronto, ON, Canada, ⁵Janssen Research and Development, LLC, Research and Development, Horsham, PA, USA, ⁶former employee of Janssen Research and Development, LLC, current employee of Provention Bio, Research and Development, Horsham, PA, USA, ⁷Goryeb Children’s Hospital/Atlantic Health, Pediatrics, Morristown, NJ, USA

¹Kindai University, Department of Gastroenterology, Osaka-Sayama, Japan, ²Nishinomiya Municipal Central Hospital, Surgery, Nishinomiya, Japan, ³Wakakusa Daiichi Hospital, Gastroenterology, Higashi-Osaka, Japan

¹Center for Primary Care and Public Health - University of Lausanne, Epidemiology and Health Services, Lausanne, Switzerland, ²Gastroenterologie La Source-Beaulieu, Centre Crohn et Colite, Lausanne, Switzerland

¹DGD Hospital Frankfurt-Sachsenhausen, Klinik für Gastroenterologie/Onkologie, Frankfurt/Main, Germany, ²Klinikum St. Georg, Department of Gastroenterology, Hepatology, Diabetology and Endocrinology, Leipzig, Germany, ³Vifor Pharma, Clinical Development, Zurich, Switzerland, ⁴Vifor Pharma, Biometrics, Zurich, Switzerland, ⁵St George’s Hospitals NHS Trust, Clinical Academic Cardiovascular Group-, London, UK

¹University Hospital Zurich, Gastroenterology and Hepatology, Zuerich, Switzerland, ²Private Practice, Center for Gastroenterology and Hepatology, Zurich, Switzerland, ³Clinic Hirslanden- Zurich- Switzerland, Center of Gastroenterology, Zurich, Switzerland, ⁴University of Bern, Institute of Social and Preventive Medicine, Bern, Switzerland, ⁵Centre Hospitalier Universitaire Vaudois CHUV and University of Lausanne, Division of Gastroenterology and Hepatology, Lausanne, Switzerland, ⁶Center for Primary Care and Public Health Unisanté – University of Lausanne, Institute of Social and Preventive Medicine IUMSP, Lausanne, Switzerland

The Dudley Group NHS Foundation Trust, Gastroenterology, Dudley, UK

¹Rabin Medical Center, Division of Gastroenterology, Petah Tikva, Israel, ²Tel Aviv University, Sackler Faculty of Medicine, Tel Aviv, Israel, ³Rabin Medical Center, Department of Surgery B, Petah Tikva, Israel

Tokyo Yamate Medical Center, Department of Internal Medicine-Division of IBD, Tokyo, Japan