¹Department of Gastroenterology, Queen Elizabeth University Hospital, Glasgow, UK, ²Department of Biochemistry, Queen Elizabeth University Hospital, Glasgow, UK

¹St Mark’s Hospital, IBD Unit, London, UK, ²St Mark’s Hospital, Intestinal Failure, London, UK

¹Hosp. Universitario Nuestra Señora de la Candelaria, Gastroenterology, Santa Cruz de Tenerife, Spain, ²Hospital Universitario Puerta de Hierro, Gastroenterology, Madrid, Spain, ³Complexo Hospitalario Universitario de Pontevedra, Gastroenterology, Pontevedra, Spain, ⁴Hospital Universitario Germans Trias i Pujol, Gastroenterology, Badalona, Spain, ⁵Hospital General de Tomelloso, Gastroenterology, Tomelloso, Spain, ⁶Hospital Clínico San Carlos, Gastroenterology, Madrid, Spain, ⁷Hospital Reina Sofía, Gastroenterology, Córdoba, Spain, ⁸Hospital Universitario Marqués de Valdecilla, Gastroenterology, Santander, Spain, ⁹Hospital Universitari de Bellvitge, Gastroenterology, Barcelona, Spain, ¹⁰Hospital Universitario Ramón y Cajal, Gastroenterology, Madrid, Spain, ¹¹Hospital Universitario Río Hortega, Gastroenterology, Valladolid, Spain, ¹²Complexo H. Universitario de Vigo, Gastroenterology, Vigo, Spain, ¹³Hospital Universitari La Fe de Valencia and CIBEREHD, Gastroenterology, Valencia, Spain, ¹⁴Hospital Universitari Mútua Terrassa and CIBEREHD, Gastroenterology, Barcelona, Spain, ¹⁵Hospital de Galdakao, Gastroenterology, Galdakao, Spain, ¹⁶Hospital Universitari de Girona, Gastroenterology, Girona, Spain, ¹⁷Hospital de la Sta Creu i Sant Pau, Gastroenterology, Barcelona, Spain, ¹⁸Complejo Asistencial Universitario de León, Gastroenterology, León, Spain, ¹⁹Hospital General Universitario de Valencia, Gastroenterology, Valencia, Spain, ²⁰Hospital Universitario de Donostia- Instituto Biodonostia- Universidad del País Vasco UPV/EHU- and CIBEREHD, Gastroenterology, Donostia, Spain, ²¹Hospital Universitario Central de Asturias, Gastroenterology, Oviedo, Spain, ²²Hospital de Cruces, Gastroenterology, Barakaldo, Spain, ²³Hospital Universitario Germans Trias i Pujol and CIBEREHD, Gastroenterology, Badalona, Spain, ²⁴Hospital Universitario de Canarias, Gastroenterology, La Laguna, Spain

¹Justus-Liebig-Universität, Institute of Nutritional Science, Giessen, Germany, ²Interdisciplinary Crohn-Colitis Centre Rhein-Main, Clinical and Scientific Research, Frankfurt am Main, Germany, ³J.W. Goethe University, Institute of Pharmaceutical Chemistry, Frankfurt am Main, Germany, ⁴Hacettepe University, Institute of Science, Ankara, Turkey, ⁵Hacettepe University, Institute of Nutritional Science, Ankara, Turkey, ⁶Agaplesion Markus Krankenhaus, Gastroenterology, Frankfurt am Main, Germany, ⁷DGD Clinics Sachsenhausen, Gastroenterology and Clinical Nutrition, Frankfurt am Main, Germany

¹University of New South Wales, South Western Sydney Clinical School, Sydney, Australia, ²St Vincent’s Hospital, Department of Gastroenterology and Hepatology, Sydney, Australia, ³Liverpool Hospital, Department of Gastroenterology and Hepatology, Sydney, Australia, ⁴Royal Prince Alfred Hospital, Department of Gastroenterology and Hepatology, Sydney, Australia, ⁵Ingham Institute for Applied Medical Research, South Western Sydney Clinical School, Sydney, Australia, ⁶Concord Repatriation General Hospital, Department of Gastroenterology and Hepatology, Sydney, Australia

¹University of British Columbia, Department of Pediatric Gastroenterology, Vancouver, Canada, ²University of Alberta, Department of Pediatric Gastroenterology, Edmonton, Canada, ³University of Manitoba, Department of Pediatric Gastroenterology, Winnipeg, Canada, ⁴University of Calgary, Section of Pediatric Gastroenterology, Calgary, Canada

¹Department of Gastroenterology, Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy, ²Istituto di Patologia Clinica, Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy

Department of Gastroenterology, Royal United Hospitals Bath NHS Foundation Trust, Bath, UK

Beaumont Hospital, Department of Gastroenterology, Dublin, Ireland

University Hospital Complex of Vigo, Department of Gastroenterology, Vigo, Spain

Moscow Scientific Center named after A. S. Loginov, Department of IBD, Moscow, Russian Federation

¹Faculty of Medicine of Tunis, Gastroenterology A Rabta, Tunis, Tunisia, ²Rabta, Gastroenterology A, Tunis, Tunisia

¹National and Kapodistrian University of Athens, GI Unit-3rd Academic Department of Internal Medicine- Sotiria Hospital, Athens, Greece, ²Medical School-National and Kapodistrian University of Athens, 2nd Department of Surgery Aretaieion Hospital, Athens, Greece, ³National and Kapodistrian University of Athens- Medical School, Gastroenterology Department of Laiko Hospital, Athens, Greece

¹University of Michigan, Department of Medicine - Division of Gastroenterology and Hepatology, Ann Arbor, USA, ²University of Michigan, Michigan Integrated Center for Health Analytics and Medical Prediction MiCHAMP, Ann Arbor, USA, ³University of Michigan, Department of Computational Medicine and Bioinformatics, Ann Arbor, USA, ⁴Lycera Corporation, Clinical Development, Plymouth Meeting, USA, ⁵University of Michigan, Department of Electrical Engineering and Computer Science, Ann Arbor, USA

¹Tillotts Pharma AG, Drug Safety, Rheinfelden, Switzerland, ²Tillotts Pharma AG, Medical Affairs, Rheinfelden, Switzerland

¹Galapagos, Clinical Development, Mechelen, Belgium, ²Northumbria Healthcare, Department of Rheumatology, Northumbria, UK, ³Oregon Health and Science University, Department of Rheumatology, Portland, USA, ⁴Stanford University USA, Immunology and Rheumatology, Palo Alto, USA, ⁵CHU Montpellier University, Department of Rheumatology, Montpellier, France, ⁶University of Occupational and Environmental Health Japan, Department of Rheumatology, Kitakyushu, Japan, ⁷Altoona Center for Clinical Research USA, Clinical Research, Duncansville, USA, ⁸Gilead Sciences Inc., Medical Affairs, Foster City, CA, USA, ⁹Gilead Sciences Inc., Clinical development, Foster City, CA, USA, ¹⁰Gilead Sciences Inc., Biostatistics, Foster City, CA, USA, ¹¹Gilead Sciences Inc., Clinical research, Foster City, CA, USA, ¹²Mount Sinai Hospital and University of Toronto Canada, Department of Rheumatology, Toronto, Canada, ¹³University UZ Leuven, Department of Rheumatology, Leuven, Belgium, ¹⁴Dartmouth College, Department of Rheumatology, Lebanon, NH, USA, ¹⁵Charité-University Medicine Berlin, Rheumatology and Clinical Immunology, Berlin, Germany

¹Division of Gastroenterology, University of California, San Diego- La Jolla- California, USA, ²Hospital Clínic de Barcelona- IDIBAPS- CIBERehd, Barcelona, Spain, Spain, ³Dr. Henry D. Janowitz Division of Gastroenterology- Icahn School of Medicine at Mount Sinai, New York, New York, USA, ⁴Medical University of Vienna, Vienna, Austria, Austria, ⁵Pfizer Inc., New York, New York, USA, ⁶Pfizer Inc., Collegeville, Pennsylvania, USA, ⁷Unit of Inflammatory Bowel Disease- Hospital Israelita Albert Einstein, São Paulo, Brazil, Brazil, ⁸Humanitas University- IBD Center- Division of Gastroenterology, Rozzano, Milan, Italy

¹Janssen Biologics BV, Medical Affairs, Leiden, The Netherlands, ²Janssen LLC, Research and Development, Horsham, USA, ³Janssen LLC, Research and Development, Springhouse, USA

¹University Hospital CHU of Liège, Gastroenterology, Liege, Belgium, ²Saint Pierre University Hospital, Gastroenterology, Brussels, Belgium, ³Imelda ziekenhuis-, Gastroenterology, Bonheiden, Belgium, ⁴Hospital CHC, Gastroenterology, Liège, Belgium, ⁵CHwapi Notre Dame, Gastroenterology, Tournai, Belgium, ⁶Maria Middelares Medical Centre, Gastroenterology, Ghent, Belgium, ⁷UZ Brussel- Vrije Universiteit Brussel, Gastroenterology, Brussels, Belgium, ⁸Ziekenhuis Oost Limburg, Gastroenterology, Genk, Belgium, ⁹Onze Lieve Vrouwziekenhuis, Gastroenterology, Aalst, Belgium, ¹⁰University Hospitals Leuven, Gastroenterology, Leuven, Belgium, ¹¹AZ Groeninge Hospital, Gastroenterology, Kortrijk, Belgium, ¹²AZ St Lucas, Gastroenterology, Gent, Belgium, ¹³Hopital Universitaire Erasme, Gastroenterology, Brussels, Belgium, ¹⁴Clinique St Pierre, Gastroenterology, Ottignies, Belgium, ¹⁵CHU UCL Namur site Sainte Elisabeth, Gastroenterology, Brussels, Belgium, ¹⁶AZ Delta, Gastroenterology, Roeselare, Belgium, ¹⁷Hospital CHR de la Citadelle, Gastroenterology, Liège, Belgium, ¹⁸Jessa Ziekenhuis, Gastroenterology, Hasselt, Belgium, ¹⁹CHU Ambroise Paré, Gastroenterology, Mons, Belgium, ²⁰Takeda Pharmaceuticals, Medical Affairs, Brussels, Belgium, ²¹Takeda Pharmaceuticals, Observational Research Analytics, Boston, USA, ²²Takeda Pharmaceuticals, Epidemiology, London, UK

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