¹Royal London Hospital, Gastroenterology, London, UK, ²Barth Health, London, UK, ³The Blizard Institute, Centre for Immunology, Barts and the London School of Medicine, London, UK

¹Academic Medical Center (AMC), Hospital Pharmacy, Amsterdam, The Netherlands, ²Academic Medical Center (AMC), Gastroenterology and Hepatology, Amsterdam, The Netherlands, ³Onze Lieve Vrouwe Gasthuis, Gastroenterology and Hepatology, Amsterdam, The Netherlands, ⁴VU University Medical Center, Gastroenterology and Hepatology, Amsterdam, The Netherlands

¹Faculty of Medicine, Autonomous University of Madrid, Department of Surgery, Madrid, Spain, ²Hospital Clínic de Barcelona, IDIBAPS, CIBERehd, Gastroenterology Department, Barcelona, Spain, ³Takeda Pharmaceuticals International, London, UK, ⁴TiGenix S.A.U., Tres Cantos, Madrid, Spain, ⁵Takeda Pharmaceuticals International AG, Zurich, Switzerland

¹Icahn School of Medicine at Mount Sinai, New York, USA, ²NOVEL Health Strategies, Bethesda, USA, ³AbbVie Inc., North Chicago, USA

¹John Radcliffe Hospital, Translational Gastroenterology Unit, Oxford, UK, ²Mathematical Institute, Oxford, UK, ³Big Data Institute, Oxford, UK, ⁴University of Oxford, Psychiatry Department, Oxford, UK, ⁵University of Oxford, Nuffield Department of Population Health, Oxford, UK, ⁶University of Oxford, Centre for Statistics in Medicine, Oxford, UK

¹Semmelweis University, First Department of Medicine, Budapest, Hungary, ²University of Szeged, First Department of Internal Medicine, Szeged, Hungary, ³Military Hospital – State Health Centre, Gastroenterology Unit, Budapest, Hungary, ⁴University of Pécs, 1st Department of Medicine, Pecs, Hungary, ⁵Mcgill University Health Center, Department of Gastroenterology, Montreal, Canada

¹Medical University of Vienna, Department of Internal Medicine III, Vienna, Austria, ²Medical University of Innsbruck, Department of Internal Medicine I, Innsbruck, Austria, ³Medical University of Graz, Department of Gastroenterology and Hepatology, Graz, Austria, ⁴Universitätsklinikum St. Pölten, Department of Internal Medicine II, St. Pölten, Austria, ⁵Darmpraxis Salzburg, Salzburg, Austria, ⁶Hospital Hall in Tirol, Department of Internal Medicine, Hall in Tirol, Austria, ⁷Hospital Rudolfstiftung, Department of Internal Medicine IV, Vienna, Austria, ⁸Hospital Elisabethinen Linz, Department of Internal Medicine IV, Linz, Austria, ⁹Hospital Wels-Grieskirchen, Department of Internal Medicine I, Wels, Austria, ¹⁰Hospital Barmherzige Brüder Salzburg, Department of Internal Medicine, Salzburg, Austria, ¹¹Hospital Wiener Neustadt, Department of Internal Medicine I, Wiener Neustadt, Austria, ¹²Hartmannspital, Department of Internal Medicine, Vienna, Austria, ¹³Danube Hospital, Department of Internal Medicine 2, Vienna, Austria, ¹⁴Wilheminenspital der Stadt Wien, Department of Internal Medicine 4, Vienna, Austria, ¹⁵Medical University of Vienna, Department of Emergency Medicine, Vienna, Austria

¹Ramon y Cajal, Gastroenterology and Hepatology, Madrid, Spain, ²Ramon y Cajal, Inmunology, Madrid, Spain, ³Ramon y Cajal, Microbiology, Madrid, Spain

¹Erasmus MC, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands, ²University Medical Center Utrecht, Department of Gastroenterology and Hepatology, Utrecht, The Netherlands, ³Leiden University Medical Center, Department of Gastroenteorlogy and Hepatology, Leiden, The Netherlands, ⁴Academic Medical Center (AMC), Department of Gastroenterology and Hepatology, Amsterdam, The Netherlands, ⁵University Medical Center Groningen, Department of Gastroenterology and Hepatology, Groningen, The Netherlands, ⁶Maastricht University Medical Center (MUMC), Department of Gastroenterology and Hepatology, Maastricht, The Netherlands, ⁷Radboud University Medical Centre, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands, ⁸VU University Medical Centre, Department of Gastroenterology and Hepatology, Amsterdam, The Netherlands, ⁹Erasmus MC, Department of Biostatistics, Rotterdam, The Netherlands

¹Merck & Co., Inc., Kenilworth, USA, ²Janssen Research and Development, LLC, Spring House, PA, USA, ³Janssen Biologics BV, Leiden, The Netherlands, ⁴Merck Sharpe and Dohme, Kriens, Switzerland

¹Hopital Claude Huriez, Lille, France, ²Hopital de Roubaix, Roubaix, France

¹Fiona Stanley Hospital, Department of Gastroenterology, Perth, Australia, ²Royal Perth Hospital, Department of Gastroenterology, Perth, Australia, ³Insitute of Immunology and Infectious Diseases, Murdoch University, Statistics, Perth, Australia, ⁴Fiona Stanley hospital, Colorectal surgery, Perth, Australia, ⁵University of Western Australia, School of Medicine and Pharmacology, Perth, Australia

¹Montpellier University Hospital, Gastroenterology, Montpellier, France, ²Association François Aupetit, Paris, France

¹ASST Fatebenefratelli Sacco, DIBIC “L. Sacco” University of Milan, Gastrointestinal Unit, Milan, Italy, ²University Hospital of Parma, Department of Gastroenterology and Digestive Endoscopy, Parma, Italy

University of Calgary, IBD unit, division of Gastroenterology and Hepatology, Calgary, Canada

¹University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium, ²KU Leuven, Translational Research in Gastrointestinal Disorders, Department of Chronic Diseases, Metabolism and Ageing, Leuven, Belgium, ³KU Leuven, Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, Leuven, Belgium

¹Oslo University Hospital, Department of Gastroenterology, Oslo, Norway, ²University of Oslo, Faculty of Medicine, Oslo, Norway, ³Oslo University Hospital, Department of Medical Biochemistry, Oslo, Norway

¹St Michael`s Hospital, Department of Gastroenterology, Bratislava, Slovakia, <sup>2</sup>Assiduo, IBD Center, Bratislava, Slovakia, <sup>3</sup>University Hospital Louis Pasteur, 1st Department of Internal Medicine, Kosice, Slovakia, <sup>4</sup>University Hospital Louis Pasteur, Department of Laboratory Medicine, Bratislava, Slovakia, <sup>5</sup>St Michael`s Hospital, Department of Biochemistry, Bratislava, Slovakia, ⁶Comenius University, Faculty of Pharmacy, Bratislava, Slovakia

¹Örebro Universitet, School of Medical Sciences, Örebro Universitet, Sweden, ²Örebro Universitet, Örebro, Sweden, ³Karolinska Institutet, Microbiology, Tumor and Cell Biology, Stockholm, Sweden

Centre for Inflammatory Bowel Disease, St John of God Subiaco Hospital, Perth, Australia