Department of Gastroenterology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey

¹Department of Gastroenterology, University Hospital Ghent, Ghent, Belgium, ²VIB Center for Inflammation Research, Ghent University, Ghent, Belgium, ³IBD Research Unit, Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium

¹St. Mark’s Hospital, Department of Colorectal Surgery, Harrow, UK, ²Imperial College London, Computational Systems Division, London, UK, ³Queen Mary University of London, Department of Surgery, London, UK, ⁴The Blizard Institute- Queen Mary University of London, Department of Surgery, London, UK

¹Department of Gastroenterology, Hôpital Erasme, Brussels, Belgium, ²Laboratory of Experimental Gastroenterology, ULB, Brussels, Belgium, ³Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium

¹Department of Gastroenterology, La Fe University Hospital, Valencia, Spain, ²Enfermedad Inflamatoria Intestinal, Instituto de Investigación Sanitaria La Fe de Valencia IIS La Fe, Valencia, Spain, ³Department of Pharmacy, La Fe University Hospital, Valencia, Spain

¹Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea Republic of, ²Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea Republic of, ³Department of Internal Medicine, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea Republic of, ⁴Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea Republic of, ⁵Division of Gastroenterology, Department of Internal Medicine, Kangbuk Samsung Hospital- Sungkyunkwan University School of Medicine, Seoul, Korea Republic of, ⁶Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea Republic of, ⁷Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea Republic of, ⁸Division of Gastroenterology, Department of Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea Republic of, ⁹Department of Internal Medicine, Hanyang University Guri Hospital, Guri, Korea Republic of, ¹⁰Department of Internal Medicine, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea Republic of, ¹¹Division of Gastroenterology, Department of Internal Medicine, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea Republic of, ¹²Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea Republic of, ¹³Department of Internal Medicine, Wonkwang University School of Medicine, Iksan, Korea Republic of, ¹⁴Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea Republic of, ¹⁵Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea Republic of, ¹⁶Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea Republic of

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

¹Hamilton Health Sciences, Ambulatory Care Program, Hamilton, Canada, ²College of Medicine and Health, University College Cork, Cork, Ireland, ³Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Canada, ⁴School of Nursing, McMaster University, Hamilton, Canada

¹Department of Gastroenterology, Centro Hospitalar Universitário do Porto, Porto, Portugal, ²Instituto Ciencias Biomédicas Abel Salazar, University of Porto, Porto, Portugal, Department of General Surgery, ³Centro Hospitalar Universitário do Porto, Porto, Portugal

¹Department of Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan, ²Department of Gastroenterology, Kagoshima City Hospital, Kagoshima, Japan, ³Department of Gastroenterology, Sameshima Hospital, Kagoshima, Japan, ⁴Department of Gastroenterology, Idzuro Imamura Hospital, Kagoshima, Japan, ⁵Department of Gastroenterology, Kagoshima Kouseiren Hospital, Kagoshima, Japan

Department of Gastroenterology, Salford Royal Foundation Trust, Manchester, UK

¹Department of Medicine, University of Calgary, Calgary, Canada, ²Faculty of Health Disciplines, Athabasca University, Athabasca, Canada, ³N/A, KAL Research and Consulting, Denver, USA, ⁴University of Calgary, Calgary, Canada, ⁵University of Calgary, Snyder, Calgary, Canada, ⁶University of Calgary, Department of Kinesiology, Calgary, Canada

¹CHU Estaing, Department of Digestive and Hepatobiliary Medicine, Department of Gastroenterology, Clermont-Ferrand, France, ²CHU Amiens, Gastroenterology, Amiens, France, ³CHU Marseille, Gastroenterology, Marseille, France, ⁴CHU Lyon-Sud, Gastroenterology, Lyon, France, ⁵CHU Bordeaux, Gastroenterology, Bordeaux, France, ⁶CHU Montpellier, Gastroenterology, Montpellier, France, ⁷CHU Nancy, Gastroenterology, Nancy, France, ⁸CHU Lille, Gastroenterology, Lille, France, ⁹CHU Nice, Gastroenterology, Nice, France, ¹⁰CHU Toulouse, Gastroenterology, Toulouse, France, ¹¹Private practice, Gastroenterology, Nantes, France, ¹²CHU Caen, Gastroenterology, Caen, France, ¹³CHU Rennes, Gastroenterology, Rennes, France, ¹⁴CHU Créteil, Gastroenterology, Créteil, France, ¹⁵Private practice- Pole Sante Republique ELSAN, Gastroenterology, Clermont-ferrand, France, ¹⁶CHU Besançon, Gastroenterology, Besançon, France, ¹⁷CH Colmar, Gastroenterology, Clermont-Ferrand, France, ¹⁸CHU Nantes, Gastroenterology, Nantes, France, ¹⁹CHU Nîmes, Gastroenterology, Nîmes, France, ²⁰CH Bayonne, Gastroenterology, Bayonne, France, ²¹Private practice, Gastroenterology, Amiens, France, ²²Private practice, Gastroenterology, Paris, France, ²³CHU St Etienne, Gastroenterology, St-Etienne, France, ²⁴CHU, Biostatistics unit, Clermont-Ferrand, France

Department of Public Health and Clinical Medicine, Umeå University, Medicine, Umeå, Sweden

¹First Department of Medicine, University of Szeged, Szeged, Hungary, ²Physiological Controls Research Center, Óbuda University,Budapest, Hungary, ³Department of Laboratory Medicine, University of Szeged, Szeged, Hungary

¹Department of Gastroenterology, Dayanand Medical College and Hospital - Ludhiana, Ludhiana, India, ²Department of Medicine, Dayanand Medical College and Hospital - Ludhiana, Ludhiana, India, ³Research and Development Centre, Dayanand Medical College and Hospital - Ludhiana, Ludhiana, India, ⁴Department of Pharmacology, Dayanand Medical College and Hospital - Ludhiana, Ludhiana, India

¹Department of Gastroenterology, Erasmus MC, Rotterdam, The Netherlands, ²Department of Surgery, IJsselland Hospital, Capelle a/d IJssel, The Netherlands, ³Department of Radiology, Erasmus MC, Rotterdam, The Netherlands

¹Fondazione IRCCS Cà Granda- Ospedale Policlinico di Milano, Gastroenterology and Endoscopy Unit, Milan, Italy, ²ASST Bergamo Est – Ospedale di Seriate, Unità Operativa di Gastroenterologia, Seriate, Italy, ³ASST degli Spedali Civili di Brescia, Unità Operativa di Gastroenterologia, Brescia, Italy, ⁴ASST Monza − Ospedale San Gerardo di Monza, Unità Operativa di Gastroenterologia, Monza, Italy, ⁵ASST Valle Olona – Ospedale di Busto Arsizio, Unità Operativa di Medicina I, Busto Arsizio, Italy, ⁶ASST Crema – Ospedale Maggiore di Crema, Unità Operativa di Gastroenterologia, Crema, Italy, ⁷Policlinico San Donato, Unità Operativa di Gastroenterologia, San Donato Milanese, Italy, ⁸ASST Valle Olona – Ospedale di Gallarate, Unità Operativa di Gastroenterologia, Gallarate, Italy, ⁹Ospedale Valduce di Como, Unità Operativa di Gastroenterologia, Como, Italy, ¹⁰University of Milan, Department of Pathophysiology and Transplantation, Milan, Italy, ¹¹Istituto Clinico Humanitas, IBD Center, Rozzano, Italy

¹Gastroenterology and Liver Services, Concord Repatriation General Hospital, Sydney, Australia, ²Concord Clinical School, University of Sydney, Sydney, Australia

¹Department of Gastroenterology, Hôpital Erasme, Brussels, Belgium, ²Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium, ³Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium, ⁴Department of Gastroenterology, CHU UCL Namur, Yvoir, Belgium, ⁵Department of Gastroenterology, Centre Hospitalier Universitaire Sart-Tilman, Liège, Belgium, ⁶Department of Gastroenterology, AZ Delta, Roeselare, Belgium, ⁷Department of Gastroenterology, AZ Maria Middelares, Gent, Belgium, ⁸Department of Gastroenterology, UZ Antwerp, Antwerp, Belgium, ⁹Department of Gastroenterology, AZ Damian, Oostende, Belgium, ¹⁰Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium