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

University of Szeged, Department of Medicine I, Szeged, Hungary

¹University Hospital Ghent, Gastroenterology, Ghent, Belgium, ²Ghent University, VIB center for Inflammation Research, Ghent, Belgium, ³Ghent University, IBD research unit, Department of Internal Medicine and Pediatrics, Ghent, Belgium, ⁴Host-Microbiota Interaction Lab and Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Ghent, Belgium

¹CHU Pontchaillou, Department of Gastroenterology, Rennes, France, ²CHU Saint-Etienne, Gastroenterology, Saint-Etienne, France, ³CHU Bordeaux, Gastroenterology, Bordeaux, France, ⁴CHU Strasbourg, Department of Gastroenterology, Strasbourg, France, ⁵Clinique Jules Vernes, Gastroenterology, Nantes, France, ⁶CHU Amiens, Department of Gastroenterology, Amiens, France, ⁷CHU Caen, Department of Gastroenterology, Caen, France, ⁸CHU Nantes, Gastroenterology, Nantes, France, ⁹CHU Lille, Department of Gastroenterology, Lille, France, ¹⁰CHU Nancy, Department of Gastroenterology, Nancy, France

King Fahad Specialist Hospital Dammam, Medicine, Dammam, Saudi Arabia

Central Clinical Hospital of the Ministry of Interior in Warsaw MSWiA, Clinical Department of Gastroenterological Surgery and Transplantation, Warsaw, Poland

University of Padua, Department of Surgery, Oncology and Gastroenterology, Padua, Italy

¹Hospital Universitario De Canarias, Gastroenterology, Santa Cruz De Tenerife, Spain, ²Hospital Universitario De Canarias, Pharmacy, Santa Cruz De Tenerife, Spain

¹Department of Peadiatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia- Katowice, Zabrze, Poland, ²Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice Students Association, Department of Peadiatrics, Zabrze, Poland, ³Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Department of Peadiatrics, Katowice, Poland

¹Yokohama City University Medical Centre, Inflammatory Bowel Disease Centre, Yokohama, Japan, ²Kannai Suzuki Clinic, Inflammatory Bowel Disease Centre, Yokohama, Japan

Oxford University Hospitals NHS Foundation Trust and Oxford AHSN, Translational Gastroenterology Unit, Oxford, UK

Osaka University Graduate School of Medicine, Gastroenterology and Hepatology, Suita, Japan

¹A Coruña Universitary Hospital, Gastroenterology Unit, A Coruña, Spain, ²A Coruña Universitary Hospital, Pharmacy Unit, A Coruña, Spain