¹Nancy University Hospital, Lorraine University, Vandœuvre-lès-Nancy, France, ²St. Mark’s Hospital, IBD Unit, London, UK, ³Pfizer Inc., Collegeville, PA, USA, ⁴Presidio Columbus Fondazione Policlinico A. Gemelli IRCCS – Università Cattolica del Sacro Cuore, IBD Unit, Rome, Italy, ⁵University Hospital Schleswig-Holstein, Department of Internal Medicine, Kiel, Germany

¹St James's Hospital, Department of Gastroenterology, Dublin, Ireland, ²Tallaght University Hospital, Department of Gastroenterology, Dublin, Ireland, ³St James's Hospital, Department of Biochemistry, Dublin, Ireland, ⁴Trinty College Dublin, School of Medicine, Dublin, Ireland, ⁵INITIative, Investigator Network Inflammatory bowel disease Therapy in Ireland, Dublin, Ireland, ⁶St Vincent's University Hospital, Gastroenterology, Dublin, Ireland, ⁷St James's Hospital, Gastroenterology, Dublin, Ireland, ⁸Beacon Hospital, Gastroenterology, Dublin, Ireland

¹Tillotts Pharma AG, Drug Safety, Rheinfelden, Switzerland, ²Tillotts Pharma AG, Medicines Management, Rheinfelden, Switzerland

¹County Durham and Darlington NHS Foundation Trust, Gastroenterology, Durham, UK

¹Icahn School of Medicine at Mount Sinai, Division of Gastroenterology, New York, USA, ²Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, USA, ³Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark, ⁴Amiens University Hospital, Amiens, France, ⁵Division of Gastroenterology and Hepatology, Lenox Hill Hospital, New York, USA, ⁶Division of Gastroenterology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, USA

¹Centre for Colorectal Disease, St Vincent’s University Hospital and School of Medicine, University College Dublin, Gastroentrology, Dublin, Ireland, ²UCD Clinical Professor, School of Medicine, University College Dublin, School of Medicine, University College Dublin, Dublin, Ireland

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

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

¹University Hospitals Leuven, Department of Paediatric gastroenterology and Hepatology and Nutrition, Leuven, Belgium, ²Catholic University of Leuven (KU Leuven), TARGID, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), Leuven, Belgium, ³Catholic University of Leuven (KU Leuven), Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, Leuven, Belgium, ⁴University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium

¹Semmelweis University, First Department of Internal Medicine, Budapest, Hungary, ²University of Szeged, First Department of Medicine, Szeged, Hungary, ³Military Hospital – State Health Centre, Department of Gastroenterology, Budapest, Hungary, ⁴Semmelweis University, Department of Laboratory Medicine, Budapest, Hungary, ⁵University of Pecs, First Department of Medicine, Pecs, Hungary, ⁶McGill University Health Center, Division of Gastroenterology, Montreal, Canada

¹University of Birmingham, Birmingham, UK, ²Crohn-Colitis Care Unit (UACC), Hospital Universitari Vall, Vall d'Hebron, Spain, ³AbbVie Ltd., Dublin, Ireland, ⁴AbbVie Inc., North Chicago, Illinois, USA, ⁵University of Lorraine, Nancy, France

¹Inflammatory Bowel Disease Center, University of Chicago Medicine, Chicago, USA, ²Litmus Health, Inc., Austin, TX, USA

¹Erasmus Medical Center, Department Colorectal surgery, Rotterdam, The Netherlands, ²Ijsselland Hospital, Department Colorectal surgery, Capelle a/d Ijssel, The Netherlands, ³Bergman Clinics, Department Reconstructive surgery, Bilthoven, The Netherlands, ⁴Erasmus Medical Center, Department Gastroenterology, Rotterdam, The Netherlands

¹University of California San Diego, La Jolla, CA, USA, ²Henri Mondor University Hospital, Creteil, France, ³University of Lorraine, Nancy, France, ⁴Aix-Marseille University, Marseille, France, ⁵University of Western Ontario, London, ON, Canada, ⁶Nice University Hospital, Nice, France, ⁷Claude Huriez Hospital, Lille, France, ⁸Mayo Clinic, Rochester, MN, USA, ⁹University Hospital of Saint-Etienne, Saint-Etienne, France, ¹⁰Estaing University Hospital, Clermont-Ferrand, France, ¹¹Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA, ¹²Beaujon Hospital, Clichy, France, ¹³Takeda Pharmaceuticals U.S.A., Inc., Deerfield, IL, USA, ¹⁴Takeda Pharmaceuticals International AG, Zurich, Switzerland, ¹⁵University Hospital of Nantes, Nantes, France, ¹⁶Cleveland Clinic Foundation, Cleveland, OH, USA, ¹⁷University Hospital of Montpellier Saint-Eloi, Montpellier, France, ¹⁸Icahn School of Medicine at Mount Sinai, New York, NY, USA, ¹⁹Bicetre University Hospital, Paris, France, ²⁰Indiana University, Indianapolis, IN, USA, ²¹New York University (NYU), New York, NY, USA, ²²Saint-Antoine University Hospital, Paris, France, ²³Montefiore Medical Center, New York, NY, USA

¹Erasmus MC, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands, ²Erasmus MC, Department of Biostatistics, Rotterdam, The Netherlands

¹Bordeaux University Hospital, Gastroenterology and nutrition, Bordeaux, France, ²Bagatelle Health Center, Proctology, Bordeaux, France

¹University of Pisa, Department of New Technologies and Translational Sciences in Medicine And Surgery, Pisa, Italy, ²Pisa University Hospital, Department of General Surgery and Gastroenterology, Pisa, Italy

¹Robert Bosch Hospital, Department of Gastroenterology, Hepatology and Endocrinology, Stuttgart, Germany

¹University of Michigan, Internal Medicine, Ann Arbor, USA, ²Multicare Institute, Tacoma, USA, ³Arena Pharmaceuticals, San Diego, USA, ⁴Northwestern University, Chicago, USA, ⁵University of North Carolina, Chapel Hill, USA, ⁶University of Cincinnati, Cincinnati, USA

¹University of Edinburgh, Edinburgh, UK, ²Royal Infirmary of Edinburgh, Edinburgh, UK, ³Westen General Hospital, Edinburgh, UK, ⁴University of Oxford, Oxford, UK, ⁵Western General Hospital, Edinburgh, UK