¹Erasmus MC/Sophia Children’s Hospital, Department of Paediatric Gastroenterology, Rotterdam, The Netherlands, ²Centre for Immunobiology, Blizard Institute, Barts and the London School of Medicine, Queen Mary University of London, Department of Paediatric Gastroenterology, London, UK, ³Université Paris Descartes, Sorbonne Paris Cité, APHP, Hôpital Necker Enfants Malades, Department of Pediatric Gastroenterology, Paris, France, ⁴Erasmus Medical Center, Sophia Children’s Hospital, Department of Pediatric Hematology, Rotterdam, The Netherlands

¹Nordic Bioscience A/S, Department of Biomarkers and Research, Herlev, Denmark, ²Akershus University Hospital, Department of Radiology, Lørenskog, Norway, ³University of Oslo, Department of Transplantation Medicine, Oslo, Norway, ⁴University of Oslo, Institute of Clinical Medicine, Oslo, Norway, ⁵Akershus University Hospital, Department of Gastroenterology, Lørenskog, Norway, ⁶University Hospital Oslo, Department of Gastroenterology, Oslo, Norway, ⁷Oslo University Hospital Rikshospitalet, Norwegian PSC Research Center, Oslo, Norway, ⁸Haraldsplass Deaconess Hospital, Department of Medicine, Bergen, Norway, ⁹University of Bergen, Department of Clinical Science, Bergen, Norway, ¹⁰Oslo University Hospital Rikshospitalet, Department of Transplantation Medicine, Oslo, Norway, ¹¹Oslo University Hospital, Department of Gastroenterology, Oslo, Norway

Kyoto Prefectural University Of Medicine, Department of Molecuar Gastroenterology and Hepatology, Kyoto, Japan

¹Medical Faculty Mannheim, Heidelberg University, Department of Medicine II, Mannheim, Germany, ²Heidelberg University Hospital, Department of General Psychiatry, Heidelberg, Germany, ³Medical Faculty Mannheim, Heidelberg University, Department of Neurology, Mannheim, Germany

¹University of California San Diego, Gastroenterology, San Diego, USA, ²University of Western Ontario, Gastroenterology, London, Ontario, Canada, ³University of Calgary, Gastroenterology, Calgary, Alberta, Canada, ⁴McMaster University, Gastroenterology, Hamilton, Ontario, Canada, ⁵Nancy University Hospital, Gastroenterology, Nancy, France, ⁶University Hospitals Leuven, Gastroenterology, Leuven, Belgium, ⁷Academic Medical Center, Gastroenterology, Antilles, Amsterdam, The Netherlands

¹Institute of Immunology and Immunotherapy, University of Birmingham, Gastroenterology, Birmingham, UK, ²Radboudumc, Gastroenterology, Nijmegen, The Netherlands, ³University Hospitals Coventry and Warwickshire, Gastroenterology, Coventry, UK, ⁴The Royal Wolverhampton NHS Trust, Gastroenterology, Wolverhampton, UK, ⁵The Dudley Group NHS Foundation Trust, Gastroenterology, Dudley, UK, ⁶University Hospitals Of Leicester NHS Trust, Gastroenterology, Leicester, UK, ⁷Institute of Translational Medicine- Institute of Immunology and Immunotherapy, NIHR Biomedical Research Centre- University of Birmiingham, Birmingham, UK, ⁸Queen Elizabeth Hospital Birmingham, Gastroenterology, Birmingham, UK, ⁹Institute of Translational Medicine, Institute of Immunology and Immunotherapy, NIHR Birmingham Biomedical Research Centre, Birmingham, UK

¹National Institute of Medical Science and Nutrition Salvador Zubiran, Department of Gastroenterology, Mexico City, Mexico, ²IBD Clinic, Department of Gastroenterology, Instituto Nacional de Ciencias Medicas y Nutricion, Gastroenterology, Mexico, Mexico

¹Tel Aviv Sourasky Medical Center, Department of Radiology, Tel Aviv, Israel, ²Tel Aviv University, The Sackler Faculty of Medicine, Tel Aviv, Israel, ³Tel Aviv Sourasky Medical Center, Department of Pediatric Gastroenterology, Tel Aviv, Israel

¹Sourasky Medical Center, Tel Aviv-Israel, Pediatric Gastroenterology, Tel Aviv, Israel, ²The Hebrew University, Institute of Biochemistry, Food Science and Nutrition, the Robert H Smith Faculty of Agriculture- Food and Environment, Rehovot, Israel, ³Rabin Medical Center, Division of Gastroenterology, Petah Tikva, Israel, ⁴Sourasky Medical Center, Tel Aviv-Israel, Sleep Disorders Center, Tel Aviv, Israel

¹University ‘Tor Vergata’ of Rome, Systems Medicine, Roma, Italy, ²University ‘Tor Vergata’ of Rome, Pathology Unit, Roma, Italy, ³Lazio Regional Health Service, Department of Epidemiology, Rome, Italy

¹Icahn School of Medicine- Mount Sinai Hospital, Pediatric GI and Nutrition, New York City, USA, ²Eli Lilly and Company, Global Patient Outcomes and Real World Evidence, Indianapolis, USA, ³Eli Lilly and Company, Global Statistical Sciences, Indianapolis, USA, ⁴Eli Lilly and Company, Gastroenterology, Indianapolis, USA, ⁵Guy’s and St Thomas’ NHS Foundation Trust, Gastroenterology, London, UK

¹Lithuanian University of Health Science, Radiology department, Kaunas, Lithuania, ²Lithuanian University of Health Science, Gastroenterology department, Kaunas, Lithuania

Gastroenterology Unit, Hospital Universitario de La Princesa. Instituto de Investigación Sanitaria Princesa IIS-IP, Universidad Autónoma de Madrid. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas CIBEREHD, Gastroenterology Unit, Madrid, Spain

¹LIthuanian University of Health Science, Radiology department, Kaunas, Lithuania, ²LIthuanian University of Health science, Gastroenterology department, Kaunas, Lithuania

CHU Estaing, Department of Digestive and Hepatobiliary Medicine, Department of Gastroenterology, Clermont-Ferrand, France

¹CHU Saint Etienne – Hospital Nord, Department of Gastroenterology and Hepatology, Inserm, CIC1408, Saint Priest en Jarez, France, ²CHU Saint Etienne – Hospital Nord, Radiology, Saint Priest en Jarez, France, ³CHU Lyon Sud, Department of Gastroenterology and Hepatology, Lyon, France, ⁴CHU Saint Etienne, Hospital Nord, Immunology, Saint Priest en Jarez, France

Hospital Beatriz Ângelo, Surgery Department, Gastroenterology Division, Lisbon, Portugal

¹San Juan de Dios Hospital, Gastroenterology Department – IBD Fellow Clínica Las Condes, Santiago, Chile, ²Clínica Las Condes, Gynecology and Obstetrics Department, Santiago, Chile, ³Clínica Las Condes, Gastroenterology Department – Inflammatory Bowel Disease Program, Santiago, Chile, ⁴Clínica Las Condes, Surgery Department, Colorectal Unit – Inflammatory Bowel Disease Program, Santiago, Chile

¹St Mark’s Hospital, Department of Gastroenterology, London, UK, ²National Institute for Health Research, Applied Research Collaborations, Northwest London, UK, ³Patient Information Forum, Head of Strategy and Partnership, London, UK, ⁴Crohns and Colitis UK, Publications and Information Manager, London, UK

¹Queen Elizabeth Hospital Birmingham, Gastroenterology, Birmingham, UK, ²St Mark’s Hospital, IBD Unit, Harrow, UK, ³NHS Forth Valley, Gastroenterology, Stirling, UK, ⁴Plymouth Hospitals NHS Trust, Gastroenterology, Plymouth, UK, ⁵University Hospitals Birmingham NHS Foundation Trust, Gastroenterology, Birmingham, UK, ⁶AbbVie Ltd., Medical, Maidenhead, UK, ⁷Royal Devon and Exeter Hospital, Gastroenterology, Exeter, UK