¹La Paz Hospital, Gastroenterology, Madrid, Spain

¹Puerta de Hierro University Hospital, Gastroenterology Department, Madrid, Spain, ²Puerta de Hierro University Hospital, Pathology Department, Madrid, Spain

¹Queen Elizabeth Hospital, University Hospital Birmingham, Department of Gastroenterology, Birmingham, UK

¹Hospital da Senhora da Oliveira, Guimarães, Gastroenterology, Guimarães, Portugal, ²School of Medicine, University of Minho, Braga, Portugal, ³ICVS/3B’s Associate Laboratory, University of Minho, Braga/Guimarães, Portugal

¹Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands, ²University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK, ³University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK, ⁴The Royal Wolverhampton NHS Trust, Wolverhampton, UK, ⁵The Dudley Group NHS Foundation Trust, Dudley, UK, ⁶University Hospitals Birmingham NHS Foundation Trust, NIHR Biomedical Research Centre, University of Birmingham, Birmingham, UK

¹Research Insitute of the McGill University Health Centre, Gastroenterology, Montreal, Canada, ²Sheba Medical Center, Gastroenterology, Ramat Gan, Israel, ³Princess Alexandra Hospital, Gastroenterology and Hepatology, Brisbane, Australia

¹Università Campus Bio-medico di Roma, Gastroenterology, Rome, Italy

¹Moscow Clinical Scientific Center named after A. S. Loginov, Department of inflammatory bowel diseases, Moscow, Russian Federation, ²Moscow Clinical Scientific Center named after A. S. Loginov, Department of Hematology, Moscow, Russian Federation, ³Moscow Clinical Scientific Center named after A. S. Loginov, Department of anesthesiology and resuscitation, Moscow, Russian Federation, ⁴Moscow Clinical Scientific Center named after A. S. Loginov, Department of laboratory diagnostics, Moscow, Russian Federation

¹National Taiwan University Hospital and College of Medicine, Internal Medicine, Taipei, Taiwan, ²Division of Gastroenterology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan, ³Department of Internal Medicine, Far Eastern Memorial Hospital, Taipei, Taiwan, ⁴Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, ⁵Health Data Research Center, National Taiwan University, Taipei, Taiwan, ⁶Department of Internal Medicine, West Garden Hospital, Taipei, Taiwan, ⁷Inflammatory Bowel Disease Clinical and Study Integrated Center, National Taiwan University Hospital, Taipei, Taiwan

¹Medical Centre – University of Freiburg, Department of Medicine II, Freiburg, Germany, ²Faculty of Medicine, University of Freiburg, Berta-Ottenstein-Programme, Freiburg, Germany

¹University of Exeter, Exeter IBD Pharmacogenetics Research Group, Exeter, UK, ²Royal Devon and Exeter NHS Foundation Trust, Department of Gastroenterology, Exeter, UK, ³University of Exeter Medical School, Genetics of Complex Traits, Exeter, UK

¹Gastroadvanced, Gastroenterology, Bogota, Colombia, ²Hospital San Pedro, Gastroenterology, Pasto, Colombia, ³Centro Médico Imbanaco, Gastroenterology, Cali, Colombia, ⁴Fundación Cardioinfantil, Gastroenterology, Bogota, Colombia, ⁵Clínica Universitaria Colombia, Gastroenterology, Bogota, Colombia, ⁶Universidad de Caldas, Gastroenterology, Manizales, Colombia, ⁷Unión de Cirujanos SAS, Gastroenterology, Manizales, Colombia, ⁸Intergastro, Gastroenterology, Medellin, Colombia, ⁹Gastroadvanced, Gastroenterology, Medellin, Colombia, ¹⁰Takeda Colombia, Medical, Bogota, Colombia, ¹¹Clínica Las Americas, Coloproctology, Medellin, Colombia

¹Hospital da Senhora da Oliveira, Gastreterology, Guimarães, Portugal, ²Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal, ³ICVS/3B’s, PT Government Associate Laboratory, Guimarães/Braga, Portugal

¹All India Institute of Medical Sciences, Gastroenterology, Delhi, India

¹IBD Section B. Udaondo Hospital, Medicine, Caba, Argentina, ²Laboratory of Investigation in Gastroenterology, Caba, Argentina

¹Hospital Universitario Virgen Macarena, Gastroenterology Unit, Seville, Spain, ²Hospital Universitario Virgen Macarena, Pharmacology, Seville, Spain

¹Amsterdam UMC – Location AMC, Radiology and Nuclear Medicine, Amsterdam, The Netherlands, ²Amsterdam UMC – Location AMC, Anaesthesiology, Amsterdam, The Netherlands, ³Amsterdam UMC – Location AMC, Surgery, Amsterdam, The Netherlands, ⁴Amsterdam UMC – Location AMC, Gastroenterology, Amsterdam, The Netherlands

¹Coimbra Hospital and University Centre, Gastroenterology, Coimbra, Portugal

¹Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil, Surgery and Anatomy, Ribeirão Preto, SP, Brazil, ²Ribeirão Preto Medical School, University of São Paulo, Division of Gastroenterology, Department of Medicine, Ribeirão Preto – SP, Brazil

¹Department of Health Management and Health Economics, The University of Oslo, Oslo, Norway, ²Department of Gastroenterology, Oslo University Hospital, Oslo, Norway