¹Tan Tock Seng Hospital, Department of Gastroenterology and Hepatology, Singapore, Singapore

¹Keele University, Research Institute for Primary Care and Health Sciences, Newcastle under Lyme, UK, ²West Midlands Collaboration for Leadership in Applied Health Research and Care, Newcastle under Lyme, UK, ³Midlands Partnership Foundation Trust, Stafford, UK, ⁴Keele University, Institute of Applied Clinical Sciences, Newcastle under Lyme, UK, ⁵University Hospitals of North Midlands NHS Trust,, Department of Gastroenterology, Stoke-on-Trent, UK

¹University of Leuven, Department of Pharmaceutical and Pharmacological Sciences, Leuven, Belgium, ²University of Leuven, Department of Chronic Diseases, Metabolism and Ageing, Leuven, Belgium, ³University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium

¹University of California San Diego, La Jolla, USA, ²Icahn School of Medicine at Mt Sinai, New York, USA, ³Janssen Scientific Affairs, LLC, Horsham, USA, ⁴Janssen Pharmaceuticals, Horsham, USA, ⁵Janssen Research and Development, LLC, Spring House, USA, ⁶University of Birmingham, Birmingham, UK, ⁷Cedars-Sinai Medical Center, Los Angeles, USA, ⁸Stellenbosch University, Stellenbosch, South Africa, ⁹Northwestern University, Feinberg School of Medicine, Chicago, USA, ¹⁰University Hospital Gasthuisberg, Leuven, Belgium, ¹¹Robarts Clinical Trials, Robarts Research Institute, Western University, London, Canada

¹Icahn School of Medicine at Mount Sinai, Division of Gastroenterology, New York, USA, ²Brooke Army Medical Center, Fort Sam Houston, USA, ³Division of Gastroenterology, Washington University in Saint Louis, Saint Louis, USA, ⁴Cedars-Sinai Medical Center, Los Angeles, USA, ⁵Medical College of Wisconsin, Milwaukee, USA, ⁶Section of Gastroenterology, Hepatology, and Nutrition, University of Chicago, Chicago, USA

¹Hospital Universitari Germans Trias i Pujol, Gastroenterology, Badalona, Spain, ²Ciberehd, Madrid, Spain, ³Hospital Universitari Germans Trias i Pujol, Surgery, Badalona, Spain

¹University of Alberta, Pediatrics, Edmonton, Canada, ²Shaarey Zedek Hospital, Jerusalem, Israel, ³Schneider Medical Center, Petach Tikva, Israel, ⁴Wolfson Medical Center, Holon, Israel, ⁵Meyer Hospital, Haifa, Israel, ⁶Kaplan Hospital, Rehovot, Israel, ⁷Dana Children’s Hospital, Tel Aviv, Israel, ⁸HaEmek Hospital, Afula, Israel, ⁹French Hospital, Nazareth, Israel, ¹⁰Poriah Hospital, Tiberias, Israel, ¹¹Hadassah Hospital, Jerusalem, Israel, ¹²Tel Aviv University, Tel Aviv, Israel, ¹³IWK Center and Dalhousie University, Halifax, Canada

¹Universitair Ziekenhuis, Vrije Uniuversiteit Brussel, Brussel, Belgium, ²Hospital For Sick Children, Toronto, Canada, ³University of Vermont Children’s Hospital, Burlington, USA, ⁴Children's Center for Digestive Health Care, LLC, Atlanta, USA, ⁵Janssen Scientific Affairs, LLC, Horsham, USA, ⁶Janssen Pharmaceuticals, Horsham, PA, Horsham, USA, ⁷Janssen Research and Development, LLC, Spring House, USA, ⁸Erasmus Mc-Sophia Children's Hospital, Rotterdam, The Netherlands

¹PGIMER, Gastroenterology, Chandigarh, India, ²PGIMER, Pathology, Chandigarh, India

¹Bristol-Myers Squibb, Princeton, USA, ²PRA Health Sciences, Blue Bell, USA

¹University Hospital Zurich and Zurich University, Gastroenterology and Hepatology, Zurich, Switzerland, ²University of Lausanne, Institute of Social and Preventive Medicine, Lausanne, Switzerland, ³Center of Gastroenterology, Klinik Hirslanden, Zurich, Switzerland, ⁴Center of Gastroenterology and Hepatology, Zurich, Switzerland, ⁵Inselspital and Bern University, Department of Visceral Surgery and Medicin, Bern, Switzerland

¹St Vincent's Hospital, Melbourne, Clinical School, Fitzroy, Australia, ²St Vincent's Hospital, Melbourne, Gastroenterology, Fitzroy, Australia

¹Amsterdam UMC - location AMC, Hospital Pharmacy, Amsterdam, The Netherlands, ²Amsterdam UMC - location AMC, Gastroenterology and Hepatology, Amsterdam, The Netherlands, ³Sanquin Diagnostic Services, Biologics Lab, Bioanalysis, Amsterdam, The Netherlands

¹Medical faculty Mannheim, Heidelberg University, Department of Medicine II, Mannheim, Germany, ²Medical faculty Mannheim, Heidelberg University, Department of Neurology, Mannheim, Germany, ³Odenwald District Healthcare Center, Center for Mental Health, Erbach, Germany

¹Semmelweis University, First Department of Internal Medicine, Budapest, Hungary, ²McGill University Health Center, Division of Gastroenterology, Montreal, Canada

¹Royal Devon and Exeter Hospital, Gastroenterology, Exeter, UK

¹Sapporo Kosei General Hospital, Department of Pediatrics, Sapporo, Japan, ²Sapporo Kosei General Hospital, IBD Center, Sapporo, Japan, ³National Center for Child Health and Development, Division of Gastroenterology, Setagaya, Japan, ⁴Miyagi Children's Hospital, Department of General Pediatrics, Sendai, Japan, ⁵Hakodate Goryoukaku Hospital, Department of Gastroenterology, Hakodate, Japan, ⁶Tokyo Yamate Medical Center, Department of Internal Medicine, Division of IBD, Shinjuku, Japan, ⁷Nagoya City University, Graduate School of Medical Sciences, Department of Gastroenterology and Metabolism, Nagoya, Japan, ⁸JIMRO Co., Ltd., MA, Takasaki, Japan

¹Odense University Hospital, Department of Medical Gastroenterology, Odense, Denmark, ²Nordic Bioscience, Biomarkers and Research, Herlev, Denmark

¹Inflammatory Bowel Disease Center, University of Chicago Medicine, Chicago, USA

¹The Children’s Memorial Health Institute, Department of Gastroenterology, Hepatology, Feeding Disorders and Paediatrics, Warsaw, Poland