¹Theagenion CHT, Gastroenterology Department, Thessaloniki, Greece

¹Great Ormond Street Hospital, Gastroenterology, London, UK

¹Sahloul Sousse, Gastroenterology, Sousse, Tunisia, ²Sahloul Sousse, Sousse, Tunisia

¹Steel Memorial Yawata Hospital, Department of Gastroenterology, Fukuoka, Japan, ²Kyushu University, Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Fukuoka, Japan, ³Saga University Hospital, Department of Endoscopy, Saga, Japan

¹Connolly Hospital, Blanchardstown, Department of Gastroenterology, Dublin, Ireland

¹Sint Antonius Teaching Hospital, Gastroenterology, Nieuwegein, The Netherlands, ²University Medical Center Utrecht, Gastroenterology, Utrecht, The Netherlands, ³Sint Antonius Teaching Hospital, Hematology, Nieuwegein, The Netherlands, ⁴University Medical Center Utrecht, Pediatrics, Laboratory of Translational Immunology, Utrecht, The Netherlands

¹Charité - Universitätsmedizin Berlin, Department of Gastroenterology, Rheumatology and Infectious Disease, Campus Benjamin Franklin, Berlin, Germany, ²Charité – Universitätsmedizin Berlin, Laboratory of Molecular Psychiatry and Department of Neuropsychiatry, DZNE Berlin, Berlin, Germany, ³Berlin Institute of Health, Berlin, Germany

¹St. James Hospital, Gastroenterology, Dublin, Ireland, ²St. James Hospital, Biochemistry, Dublin, Ireland

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