¹McGill University Health Centre, Division of Gastroenterology, Montréal, Canada, ²Princess Alexandra Hospital, Department of Gastroenterology and Hepatology, Brisbane, Australia, ³Geneva University Hospitals and University of Geneva, Department of Gastroenterology and Hepatology, Geneva, Switzerland, ⁴Semmelweis University, Department of Gastroenterology, Budapest, Hungary

¹Virgen Macarena Hospital, Gastroenterology, Sevilla, Spain, ²Juan Ramón Jiménez Hospital, Gastroenterology, Huelva, Spain, ³Virgen Macarena Hospital, Pharmacy Unit, Sevilla, Spain

¹St Vincent's Hospital, Gastroenterology, Melbourne, Australia, ²Mater Hospital, Gastroenterology, Brisbane, Australia, ³Mater Research Institute, Brisbane, Australia, ⁴Queen Elizabeth Hospital, Gastroenterology, Adelaide, Australia, ⁵University of Adelaide, Adelaide, Australia

¹Indiana University School of Medicine, Indianapolis, USA, ²Cincinnati Children's Hospital Medical Center, Cincinnati, USA, ³Massachusetts General Hospital for Children, Boston, USA, ⁴Phoenix Children's Hospital, Phoenix, USA, ⁵Penn State Children's Hospital, Hershey, USA, ⁶Abbvie Deutschland GmbH & Co. KG, Ludwigshafen, Germany, ⁷AbbVie, North Chicago, USA, ⁸University of Vermont Children’s Hospital, Burlington, USA, ⁹ImproveCareNow, Burlington, USA

¹CHU Saint Etienne, Saint Etienne, France, ²University of Lyon, Lyon, France, ³University Hospital, Gastroenterology, Saint Etienne, France, ⁴CHU de Nancy, Department of Gastroenterology, Vandoeuvre-les-Nancy, France, ⁵University of Saint Etienne, Immunology, Saint Etienne, France

Royal Bournemouth Hospital, Department of Gastroenterology, Bournemouth, UK

¹Hospital Universitario Miguel Servet, Zaragoza, Spain, ²Universidad de Zaragoza, Zaragoza, Spain, ³Fundación IIS Aragon, Zaragoza, Spain, ⁴Hospital Clinico Universitario Lozano Blesa, Gastroenterology Department, Zaragoza, Spain, ⁵Hospital Clinico Universitario Lozano Blesa, Pharmacy Department, Zaragoza, Spain, ⁶CIBERehd, Barcelona, Spain

¹Takeda Pharmaceuticals USA, Inc., Deerfield, USA, ²Icahn School of Medicine at Mount Sinai, New York, USA

¹University of Calgary, Gastroenterology, Calgary, Canada, ²University of Calgary, Community Health Sciences, Calgary, Canada, ³University of Calgary, Foothills Medical Centre, Diagnostic Imaging, 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

¹Hopital Henri Mondor, Gastroenterology, Créteil, France, ²Hopital Saint Joseph, Gastroenterology, Paris, France

University of Chicago Medicine, Inflammatory Bowel Disease Center, Chicago, USA

Aristotle University, Hippokration Hospital, Second Propedeutic Department of Internal Medicine, Thessaloniki, Greece

Venizelion General Hospital, Department of Gastroenterology, Heraklion, Greece

University of Szeged, 1st Department of Medicine, Szeged, Hungary

¹University of California San Diego, La Jolla, USA, ²Robarts Clinical Trials, London, Canada, ³Perelman School of Medicine at The University of Pennsylvania, Philadelphia, USA, ⁴Istituto Clinico Humanitas, Milan, Italy, ⁵Medical University of Vienna, Vienna, Austria, ⁶University of Chicago Medicine, Chicago, USA, ⁷AbbVie Inc., North Chicago, USA

¹Rabta Hospital, Gastroenterology “A”, Tunis, Tunisia, ²Rabta Hospital, Surgery “A”, Tunis, Tunisia

Guy's and St Thomas' Hospital, Gastroenterology, London, UK

¹Tor Vergata University, Department of Surgery, Rome, Italy, ²Tor Vergata University, Surgery, Rome, Italy

Coimbra Hospital and University Center, Gastroenterology, Coimbra, Portugal