School of Medicine Federico II of Naples, Department of Clinical Medicine and Surgery, Naples, Italy

Fundeni Clinical Institute, Gastroenterology, Bucharest, Romania

¹Mater Dei Hospital, Msida, Malta, ²Medical School and University Hospital of Ioannina, Department of Gastroenterology and Hepatology, Ioannina, Greece, ³Venizeleio General Hospital, Department of Gastroenterology, Crete, Greece, ⁴Evangelismos Hospital, Department of Gastroenterology, Athens, Greece, ⁵Sheba Medical Center, Department of Gastroenterology, Tel Hashomer, Israel, ⁶University Hospital Heraklion, Department of Gastroenterology, Crete, Greece, ⁷University of Szeged, First Department of Internal Medicine, Szeged, Hungary

Nottingham University Hospital, Digestive Disease and Thoracic, Nottingham, UK

Hospital Sahloul Sousse, Department of Gastroenterology, Sousse, Tunisia

LUMC, Gastroenterology-Hepatology, Leiden, The Netherlands

King Abdulaziz University, Medicine, Jeddah, Saudi Arabia

¹La Fe University and Polytechnic Hospital, Valencia, Spain, ²CIBEREHD (Networked Biomedical Research Center for Hepatic and Digestive Diseases), Valencia, Spain, ³Health Research Institute La Fe, Valencia, Spain, ⁴University of Valencia, Valencia, Spain, ⁵Joint Research Unit in Biomedical Engineering (eRPSS: IIS La Fe-UPV), Valencia, Spain, ⁶Connected Health Services, Valencia, Spain, ⁷Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain, ⁸Systems Department, La Fe University and Polytechnic Hospital, Valencia, Spain

¹Shaare Zedek Medical Center, Digestive Diseases Institute, Jerusalem, Israel, ²Shaare Zedek Medical Center, Digestive diseases institute, Jerusalem, Israel

¹Nordic Bioscience, Biomarkers and Research, Herlev, Denmark, ²Odense University Hospital, Department of Gastroenterology, Odense, Denmark, ³University of Pavia, First Department of Medicine, San Matteo Hospital Foundation, Pavia, Italy, ⁴University College of London, Institute for Liver and Digestive Health, London, UK

¹University Hospital Estaing, Gastroenterology Department, Clermont-Ferrand, France, ²University Hospital Estaing, Radiology Department, Clermont-Ferrand, France, ³University Hospital G. Montpied, Biochemistry Laboratory, Clermont-Ferrand, France, ⁴UMR 1071 Inserm/Université d'Auvergne; USC-INRA 2018, Microbes, Intestine, Inflammation and Susceptibility of the Host, Clermont-Ferrand, France, ⁵Hospital of Bayonne, Gastroenterology Department, Bayonne, France, ⁶University Hospital, Biostatistics Unit, DRCI, Clermont-Ferrand, France

¹First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China, ²Hospital Clínic de Barcelona, Barcelona, Spain, ³Cleveland Clinic, Cleveland, USA, ⁴Sheba Medical Center, Tel-aviv, Israel

¹University Hospital Estaing, Gastroenterology Department, Clermont-Ferrand, France, ²UMR 1071 Inserm/Université d'Auvergne; USC-INRA 2018, Microbes, Intestine, Inflammation and Susceptibility of the Host, Clermont-Ferrand, France, ³Queen Elizabeth Hospital, Department of Medicine, Hong Kong, Hong Kong, ⁴Inflammatory Bowel Disease Center University of Chicago Medicine, Chicago, USA, ⁵University Hospital, Biostatistics Unit, DRCI, Clermont-Ferrand, France

¹Alexandria University, Gastroenterology, Alexandria, Egypt, ²Alexandria University, Clinical Pathology, Alexandria, Egypt, ³Alexandria University, Radiodiagnosis, Alexandria, Egypt

¹Weill Cornell Medicine, New York, USA, ²Cincinnati Children's Hospital Medical Center, Cincinnati, USA, ³University of North Carolina School of Medicine, Chapel Hill, USA, ⁴Seattle Children's, Seattle, USA, ⁵Nationwide Children's Hospital, Columbus, USA, ⁶Boystown National Research Hospital, Boystown, USA, ⁷University of Vermont College of Medicine, Burlington, USA

¹La Fe University and Polithecnic Hospital/CIBEREHD, Gastroenterology-IBD Unit, Valencia, Spain, ²IIS La Fe-Health Research Foundation Hospital/CIBEREHD, Gastroenterology-IBD Unit, Valencia, Spain, ³IIS La Fe-Health Research Foundation Hospital, Biostatistics Unit, Valencia, Spain

¹University Hospitals Leuven, Department of Gastroenterology, Leuven, Belgium, ²Imelda GI Clinical Research Center, Department of Gastroenterology, Bonheiden, Belgium, ³Sapporo Medical University, Department of gastroenterology, Sapporo, Japan, ⁴Pentax Medical, Product development department, Tokyo, Japan

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

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

¹Janssen Scientific Affairs, LLC, Horsham, USA, ²CK Consulting Associates, LLC, Saint Helena Island, USA