¹Semmelweis University, Budapest, Hungary, ²Hospital Universitari Germans Trias i Pujol., Badalona, Spain, ³Facharzt für Innere Medizin, Munich, Germany, ⁴Lund University, Lund, Sweden, ⁵Hospira, Warwickshire, United Kingdom, ⁶Navigant, London, United Kingdom, ⁷Navigant, New York, New York, United States

¹Moscow Clinical Research Centre, Department of Inflammatory Bowel Disease, Moscow, Russian Federation, ²Moscow Clinical Research Centre, Department of Inflammatory bowel disease, Moscow, Russian Federation, ³Central Research Institute of Gastroenterology, Department of Inflammatory Bowel Disease, Moscow, Russian Federation, ⁴Medical Radiological Scientific Centre, Department of Stem Cells Therapy, Obninsk, Russian Federation

¹Alfred Hospital, Gastroenterology, Melbourne, Australia, ²Eastern Health, Gastroenterology, Melbourne, Australia, ³Monash University, Faculty of Medicine, Nursing and Health Sciences, Melbourne, Australia, ⁴Monash University, Biostatistics, Faculty of Medicine, Nursing and Health Sciences, Melbourne, Australia

¹UCLA Centre for Inflammatory Bowel Diseases, Division of Digestive Diseases, University of California, Los Angeles, California, United States, ²AbbVie, US Immunology, North Chicago, Illinois, United States, ³Anthem Blue Cross, California, Woodland Hills, California, United States, ⁴Academic Medical Centre, Amsterdam, Department of Medical Oncology, Amsterdam, Netherlands

¹Academic Medical Centre (AMC), Department of Paediatric Gastroenterology, Amsterdam, Netherlands, ²Academic Medical Centre (AMC), Department of Paediatric Gastroenterology and Nutrition, Amsterdam, Netherlands, ³Academic Medical Centre (AMC), Department of Gastroenterology,

¹The Children’s Memorial Health Institute, Department of Gastroenterology, Hepatology, Feeding Disorders and Paediatrics, Warsaw, Poland, ²The Children’s Memorial Health Institute, Department of Gastroenterology, Hepatology, Feeding Disorders and Paediatrics, Warsaw, Poland

Austin Health, Gastroenterology, Melbourne, Australia

Juntendo University, Department of Gastroenterology, Tokyo, Japan

¹University of Otago, Department of Surgery, Christchurch, New Zealand, ²University of Otago, Department of Medicine, Dunedin, New Zealand, ³University of Otago, Department of Medicine, Christchurch, New Zealand, ⁴University of Otago, Christchurch, Department of Population Health, Christchurch, New Zealand

¹Hospital Universitari Germans Trias i Pujol, Gastroenterology, Badalona, Spain, ²Hospital San Jorge, Digestive Surgery, Huesca, Spain, ³Hospital Germans Trias i Pujol. CIBEREHD, Gastroenterology, Badalona, Spain, ⁴Hospital Universitari Germans Trias i Pujol, Digestive Surgery, Badalona, Spain

AOU Careggi, Regional Referral Centre of Inflammatory Bowel Disease - Clinical Gastroenterology Division, Florence, Italy

¹Iscare, IBD Clinical and Research Centre, Prague, Czech Republic, ²First Medical Faculty and Central Military Hospital, Charles University, Department of Internal Medicine, Prague, Czech Republic, ³First Medical Faculty, Charles University, Institute of Pharmacology, Prague, Czech Republic, ⁴First Medical Faculty and General Teaching Hospital, Charles University, Institute of Medical Biochemistry and Laboratory Diagnostics, Prague, Czech Republic

¹University of Liège and CHU, Liège, Belgium, ²Karolinska Institutet and IBD Unit, Sophiahemmet, Stockholm, Sweden, ³Medical University of Vienna, Vienna, Austria, ⁴Vanderbilt University Medical Centre, Nashville, United States, ⁵AbbVie Inc., North Chicago, Illinois, United States

¹Seoul National University College of Medicine, Department of Internal Medicine and Liver Research Institute, Seoul, South Korea, ²Seoul National University College of Medicine, Department of Internal Medicine and Lung Institute, Seoul, South Korea, ³Kyung Hee University School of Medicine, Department of Internal Medicine, Seoul, South Korea, ⁴Sungkyunkwan University School of Medicine, Department of Internal Medicine, Seoul, South Korea, ⁵Hanyang University, Department of Internal Medicine, Guri, South Korea, ⁶Ewha Woman’s University School of Medicine, Department of Internal Medicine, Seoul, South Korea, ⁷Dankook University College of Medicine, Department of Internal Medicine, Cheonan, South Korea, ⁸The Catholic University of Korea College of Medicine, Department of Internal Medicine, Seoul, South Korea, ⁹Yonsei University College of Medicine, Department of Internal Medicine, Seoul, South Korea

¹Sheba Medical Centre Tel Hashomer, Sackler School of Medicine, Tel-Aviv University, Gastroenterology, Ramat Gan, Israel, ²Sheba Medical Centre Tel Hashomer, Sackler School of Medicine, Tel-Aviv University, Internal Medicine C, Ramat Gan, Israel

¹Asan Medical Centre, University of Ulsan College of Medicine, Department of Gastroenterology, Seoul, South Korea, ²Asan Medical Centre, University of Ulsan College of Medicine, Health Screening and Promotion Centre, Seoul, South Korea

¹Research Institute of the McGill University Hospital, Gastroenterology, Montreal, Canada, ²Sheba Medical Centre, Gastroenterology, Tel Hashomer, Tel Aviv, Israel, ³University Hospital of Geneva, Department of Gastroenterology and Hepatology, Geneva, Switzerland, ⁴Research Institute of the McGill University Health Centre, Rheumatology, Montreal, Canada

¹Imperial College, Section of Academic Neonatal Medicine, London, United Kingdom, ²Imperial College, Nutrition and Dietetic Research Group, Faculty of Medicine, London, United Kingdom, ³Chelsea and Westminster Hospital NHS Foundation Trust, Department of Paediatric Gastroenterology, London, United Kingdom

¹Hospital de Sagunto, Valencia, Spain, ²HOSPITAL DE SAGUNTO, VALENCIA, Spain, ³HOSPITAL DE SAGUNTO, Valencia, Spain, ⁴Hospital de sagunto, Valencia, Spain

Yokkaichi Hazu Medical Centre, Inflammatory Bowel Disease Centre, Yokkaichi, Japan