¹UniversitätsSpital Zürich, Zürich, Switzerland, ²Crohn Colitis Zentrum Bern, Bern, Switzerland, ³Universitätsspital Basel, Basel, Switzerland, ⁴Universitätsklinik Inselspital, Bern, Switzerland, ⁵Université de Lausanne, Lausanne, Switzerland

¹Beth Israel Deaconess Medical Center, Gastroenterology, Boston, USA, ²Stanford University Medical Center, Gastroenterology, Stanford, USA, ³University of Copenhagen, Clinical Medicine, Copenhagen, Denmark

¹Faculdade Farmacia Universidade Lisboa, iMed - Research Institute for Medicines, Lisboa, Portugal, ²Samsung Bioeips Co., Ltd., Incheon, South Korea

¹Erasmus Medical Center - Sophia Children's Hospital, Paediatric gastroenterology, Rotterdam, The Netherlands

¹Western University, Department of Medicine, Division of Gastroenterology, London, Ontario, Canada, ²King Fahad Specialist Hospital, Department of Medicine, Division of Gastroenterology, Dammam, Saudi Arabia, ³University of Calgary, Division of Gastroenterology and Hepatology, Calgary, Alberta, Canada, ⁴King Abdulaziz University, Department of Medicine, Rabigh, Saudi Arabia, ⁵Robarts Clinical Trials, Inc., London, Ontario, Canada, ⁶Western University, Department of Epidemiology and Biostatistics, London, Ontario, Canada

¹Royal Bournemouth Hospital, Gastroenterology, Bournemouth, UK

¹Complejo Hospitalario de Navarra, Gastroenterology and Hepatology, Pamplona, Spain

¹Chaim Sheba Medical Center, Gastroenterology, Tel Hashomer, Israel, ²Tel Aviv University, Sackler Faculty of Medicine, Tel Aviv, Israel

¹Yokohama City University Medical Center, Inflammatory Bowel Disease Center, Yokohama, Japan, ²Kannai Suzuki Clinic, Yokohama, Japan, ³Yokohama City University Graduate School of Medicine, Department of Gastroenterology, Yokohama, Japan

¹NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and The University of Nottingham, Nottingham, UK, ²Nottingham Digestive Diseases Centre, The University of Nottingham, Nottingham, UK, ³University Hospitals of Derby and Burton NHS Foundation Trust, Royal Derby Hospital, Derby, UK, ⁴Sherwood Forest Hospitals NHS Foundation Trust, Kings Mill Hospital, Nottingham, UK, ⁵University Hospitals of Leicester NHS Trust, Leicester General Hospital, Leicester, UK, ⁶Chesterfield Royal Hospital NHS Foundation Trust, Chesterfield, UK, ⁷United Lincolnshire Hospitals NHS Trust, Lincoln County Hospital, Lincoln, UK, ⁸Kettering General Hospital NHS Foundation Trust, Kettering, UK, ⁹Takeda UK Ltd., High Wycombe, UK

¹Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University; Shanghai Institute of Digestive Disease; Shanghai Inflammatory Bowel Disease Research Center, Shanghai, China, ²Department of Gastroenterology, Xijing Hospital, Air Force Military Medical University, Xi'an, China, ³Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Beijing, China

¹Tohoku University Graduate School of Medicine, Division of Gastroenterology, Sendai, Japan, ²Tohoku University, Health Administration Center, Center for the Advancement of Higher Education, Sendai, Japan

¹University of Szeged, First Department of Medicine, Szeged, Hungary, ²University of Szeged, Department of Medical Physics and Informatics, Szeged, Hungary, ³University of Szeged, Institute of Laboratory Medicine, Szeged, Hungary, ⁴University of Debrecen, Department of Laboratory Medicine, Debrecen, Hungary, ⁵University of Debrecen, Department of Internal Medicine, Debrecen, Hungary, ⁶University of Szeged, 2nd Department of Internal Medicine, Debrecen, Hungary

¹Sackler Faculty of Medicine Tel Aviv University, Tel Aviv, Israel, ²Meir Hospital, Gastroenterology and Liver disease, Kfar Saba, Israel, ³Assaf Harofeh, The Kamila Gonczarowski Institute for Gastroenterology and Liver Diseases, Zerifin, Israel, ⁴Shaare Zedek Medical Center, Gastroenterology institute, Jerusalem, Israel, ⁵Sackler Faculty of Medicine Tel Aviv University, Department of Epidemiology and Preventive Medicine, Tel aviv, Israel

¹Medical University Varna, Clinic of Hepatogastroenterology, St. Marina University Hospital, Varna, Bulgaria, ²Medical University Varna, Department of General Medicine and Clinical Laboratory, Varna, Bulgaria

¹Tehran university ofMedical Sciences, Tehran, Iran, Islamic Republic of

¹Tillotts Pharma AG, Medical Affairs, Rheinfelden, Switzerland, ²Tillotts Pharma, Medicines Management, Rheinfelden, Switzerland

¹University Hospital Schleswig-Holstein, Kiel, Germany, ²Sheba Medical Center, Tel Hashomer, Israel, ³Asan Medical Center, Seoul, South Korea, ⁴University Hospital KU Leuven, Leuven, Belgium, ⁵Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea, ⁶Celltrion, Inc., Incheon, South Korea, ⁷Medical University Vienna, Vienna, Austria

¹University of Birmingham, Birmingham, UK, ²Janssen Scientific Affairs, LLC, Horsham, USA, ³Janssen Research and Development, LLC, Spring House, USA, ⁴University Hospital Gasthuisberg, Leuven, Belgium, ⁵Icahn School of Medicine at Mount Sinai, New York, USA

¹Icahn School of Medicine at Mount Sinai, New York, USA, ²Janssen Global Services, LLC, Malvern, USA, ³Janssen Research & Development, LLC, Spring House, USA, ⁴Concord Hospital, Sydney, Australia, ⁵Macquarie University Hospital, Sydney, Australia, ⁶Humanitas Research Hospital, Milan, Italy