¹St Mark's Hospital, London, UK, ²Imperial College London, London, UK, ³Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands, ⁴Centro Hospitalar S. Joao,, Porto, Portugal, ⁵King’s College, London, UK, ⁶South Devon NHS Foundation Trust,, Torbay, UK

¹Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil, Surgery and Anatomy, Ribeirão Preto, SP, Brazil

¹Nordic Biosciene A/S, Biomarkers and Research, Herlev, Denmark, ²University of Southern Denmark and Odense University Hospital, Department of Medical Gastroenterology, Odense, Denmark

¹University of Naples Federico II, Department of Translational Medical Science, Section of Pediatrics, Naples, Italy, ²University of Campania ‘Luigi Vanvitelli’, Department of Woman, Child and General and Specialistic Surgery, Naples, Italy, ³University of Naples Federico II, Public of Health Department, Naples, Italy, ⁴University of Naples Federico II, Department of Radiology Section of Pediatric Diagnostics, Naples, Italy

¹Department of Internal Medicine, Kosin University College of Medicine, Busan, South Korea

¹Hospital Beatriz Ângelo, Gastroenterology, Lisbon, Portugal, ²Hospital Beatriz Ângelo, Gastroenterology, Lisboa, Portugal

¹Military Medical Academy Memorial Teaching Hospital of the Medical University of Lodz – Central Veterans’ Hospital, Department of Gastroenterology, Lodz, Poland

¹São Paulo University Medical School, Pediatric, São Paulo, Brazil, ²Hospital Israelita Albert Einstein, GI, São Paulo, Brazil, ³Hospital das Clínicas HCFMUSP, Gastroenterology, São Paulo, Brazil, ⁴Hospital das Clínicas HCFMUSP, Surgery, São Paulo, Brazil, ⁵Instituto da Criança HCFMUSP, Pediatric, São Paulo, Brazil

¹Mustafa Kemal University, Gastroenterology, Hatay, Turkey, ²Mustafa Kemal University, Internal Medicine, Hatay, Turkey

¹Aster CMI Hospital, Department of Gastroenterology, Liver Diseases and Clinical Nutrition, Bangalore, India

¹Hospital Gregorio Marañón, Department of Gastroenterology, Madrid, Spain, ²Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain, ³Hospital La Fe, Valencia, Spain, ⁴Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBEREHD), Valencia, Spain, ⁵Hospital General Universitario de Castellón, Castellón, Spain, ⁶Hospital de la Santa Creu i Sant Pau, Barcelona, Spain, ⁷Hospital Universitario Virgen Macarena, Sevilla, Spain, ⁸Takeda Farmacéutica España SA, Madrid, Spain, ⁹Hospital Universitario Río Hortega, Department of Gastroenterology, Valladolid, Spain, ¹⁰University Clinic Hospital of Valencia, IBD Unit, Gastroenterology Department, Valencia, Spain, ¹¹Hospital Clínico Universitario de Santiago, Department of Gastroenterology, Santiago de Compostela, Spain, ¹²Hospital Universitario Cruces, Department of Gastroenterology, Bilbao, Spain, ¹³Hospital Dr. Josep Trueta, Department of Gastroenterology, Girona, Spain, ¹⁴Hospital de Sagunto, IBD Unit, Gastroenterology Section, Sagunto, Spain, ¹⁵University of Cardenal Herrera-CEU, Castellón, Spain, ¹⁶Hospital Universitario de Burgos, Burgos, Spain, ¹⁷Hospital Ramón y Cajal, Department of Gastroenterology, Madrid, Spain

¹città della salute e della scienza di torino, Torino, Italy

¹Janssen Research and Development, LLC, Spring House, USA, ²Concord Hospital, Sydney, Australia, ³Macquarie University Hospital, Sydney, Australia, ⁴Kyorin University, Tokyo, Japan, ⁵University of Leuven, Leuven, Belgium, ⁶Humanitas Research Hospital, Milan, Italy, ⁷University of Miami Miller School of Medicine, Miami, USA, ⁸Icahn School of Medicine at Mount Sinai, New York, USA, ⁹University of California San Diego, La Jolla, USA

¹Icahn School of Medicine at Mount Sinai, New York, USA, ²Nancy University Hospital, Université de Lorraine, Nancy, France, ³Janssen Research and Development, LLC, Spring House, USA, ⁴Janssen Research and Development, Spring House, USA, ⁵Auckland City Hospital, Auckland, New Zealand, ⁶University of Auckland, Auckland, New Zealand, ⁷Concord Hospital, Sydney, Australia, ⁸Macquarie University Hospital, Sydney, Australia, ⁹Warwick Medical School, University Hospital Coventry, Warwickshire, UK, ¹⁰Humanitas Research Hospital, Milan, Italy, ¹¹University of Leuven, Leuven, Belgium, ¹²Cedars-Sinai Medical Center, Los Angeles, USA, ¹³University of California San Diego, La Jolla, USA

¹Mayo Clinic, Rochester, Minnesota, USA, ²The University of Chicago Medicine, Chicago, Illinois, USA, ³Hospital Clínic Barcelona, Barcelona, Spain, ⁴AbbVie Inc., North Chicago, Illinois, USA, ⁵Oxford University Hospitals, Oxford, UK

¹Amiens university hospital, Amiens, France, ²Icahn School of Medicine at Mount Sinai, Division of Gastroenterology, New York, USA

¹Hospital Clinic Barcelona, Barcelona, Spain, ²AbbVie Inc., Worcester MA, USA, ³Guy's and St Thomas' Hospital, London, UK, ⁴AbbVie Inc., Chicago, IL, USA, ⁵AbbVie Inc., Ludwigshafen am Rhein, Germany, ⁶University of Western Ontario, London, ON, Canada

¹St Mark's Hospital, Department of Colorectal Surgery, London, UK, ²Imperial College London, Department of Surgery and Cancer, London, UK, ³University of Kelaniya, Department of Surgery, Kelaniya, Sri Lanka, ⁴Humanitas Clinical and Research Center, Division of Colon and Rectal Surgery, Milan, Italy, ⁵St Mark's Hospital, Department of Gastroenterology, London, UK, ⁶Humanitas University, Department of Biomedical Sciences, Milan, Italy

¹Icahn School of Medicine at Mount Sinai, New York, USA, ²Janssen Biologics BV, Leiden, The Netherlands, ³Janssen Scientific Affairs, LLC, Horsham, USA, ⁴Janssen Research and Development, LLC, Spring House, USA, ⁵Icahn School of Medicine at Mt Sinai, New York, USA, ⁶Cedars-Sinai Medical Center, Los Angeles, USA, ⁷University of Birmingham, Birmingham, UK, ⁸University of California San Diego, La Jolla, USA

¹The Royal London Hospital, Barts Health NHS Trust, Department of Gastroenterology, London, UK, ²Guy's and St Thomas' NHS Foundation Trust, Department of Gastroenterology, London, UK, ³University College London Hospitals NHS Foundation Trust, Department of Gastroenterology, London, UK