Universidad de Barcelona - Hospital Clínic Barcelona, Universidad de Barcelona - Hospital Clínic Barcelona, Universidad de Barcelona - Hospital Clínic Barcelona, Hospital Universitario de Canarias, Hospital Universitario de Canarias, Universidad de Barcelona - Hospital Clínic Barcelona, Universidad de Barcelona - Hospital Clínic Barcelona, University of Bonn - University Hospital Bonn (UKB), University of Bologna, University of Bonn - University Hospital Bonn (UKB), University of Bonn - Department of Internal Medicine I, KU Leuven - Department of Gastroenterology and Hepatology, KU Leuven - Molecular Digestive Oncology, Osakidetza Basque Health Service - Galdakao-Usansolo University Hospital, Universitat Pompeu Fabra (UPF) - Hospital del Mar Medical Research Institute, Universitat Pompeu Fabra (UPF) - Hospital del Mar Medical Research Institute, Hospital Universitario de Móstoles, Humanitas University, Humanitas University - Department of Biomedical Sciences, Alvaro Cunqueiro University Hospital, Università Vita-Salute San Raffaele - Gastroenterology and Gastrointestinal Endoscopy Unit, Hospital de la Santa Creu i Sant Pau, Hospital de la Santa Creu i Sant Pau, Universitat de Vic - Universitat Central de Catalunya (UVic-UCC), Universidad Pública de Navarra - IdiSNA, Navarra Institute for Health Research, Universidad Pública de Navarra - IdiSNA, Navarra Institute for Health Research, Universidad de Barcelona - Hospital Clínic Barcelona, Ourense University Hospital, University Miguel Hernández, Universidad de Barcelona - Hospital Clínic Barcelona, Universidad de Barcelona - Hospital Clínic Barcelona and Independent

Charles University, Institute of Clinical and Experimental Medicine, Charles University, Humanitas University - Department of Biomedical Sciences, University Hospital Würzburg, University of Amsterdam - Amsterdam University Medical Centers, KU Leuven - Department of Gastroenterology and Hepatology, University Hospital Augsburg, Harvard University - Department of Psychology, University Hospital Eppendorf (UKE), University of Hamburg - University Medical Center Hamburg-Eppendorf, University of Hamburg - University Medical Center Hamburg-Eppendorf, University Hospital Motol, Istituto Clinico Humanitas Rozzano, Università Vita-Salute San Raffaele - IRCCS Ospedale San Raffaele, University Hospital Würzburg, University of Amsterdam - Amsterdam University Medical Centers, Israelitic Hospital Hamburg, Montreal University Hospital and Research Center, University of Amsterdam - Amsterdam University Medical Centers, KU Leuven, University Hospital Eppendorf (UKE), Charles University and University Hospital Eppendorf (UKE)

University of Amsterdam - Department of Gastroenterology and Hepatology, affiliation not provided to SSRN, University College London Hospital - Department of Gastroenterology, Medizinische Klinik - Klinikum Augsburg, III, affiliation not provided to SSRN, affiliation not provided to SSRN, Queen Alexandra Hospital, Humanitas University - Department of Biomedical Sciences, affiliation not provided to SSRN, Hirslanden Private Hospital Group - Centre of Gastroenterology, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Catharina Hospital - Department of Gastroenterology and Hepatology, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Radboud University Nijmegen - Radboud University Medical Center, AOU Città della Salute e della Scienza di Torino - SSD Epidemiologia e Screening, affiliation not provided to SSRN, UZ Leuven, University of Amsterdam - Department of Gastroenterology and Hepatology, IRCCS Humanitas Research Hospital - Department of Biomedical Sciences and KU Leuven - Department of Gastroenterology and Hepatology

Polytechnic University of Valencia, Polytechnic University of Valencia, Humanitas University, University of Brescia, Polytechnic University of Valencia, Polytechnic University of Valencia, University of Cologne, University of Milan, KU Leuven - Department of Gastroenterology and Hepatology, UZ Leuven, University of Calgary, affiliation not provided to SSRN, University of Washington, affiliation not provided to SSRN, Johns Hopkins University, University of Calgary - Division of Gastroenterology & Hepatology, University of Nottingham, Queen Alexandra Hospital, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Klinikum Bayreuth, affiliation not provided to SSRN, London South Bank University, University of Cologne, Humanitas University and Polytechnic University of Valencia

University of Amsterdam - Department of Gastroenterology and Hepatology, St. Antonius Hospital - Department of Gastroenterology and Hepatology, KU Leuven - Department of Gastroenterology and Hepatology, KU Leuven - Department of Gastroenterology and Hepatology, St. Antonius Hospital - Department of Gastroenterology and Hepatology, St. Antonius Hospital - Department of Gastroenterology and Hepatology, Utrecht University - Department of Gastroenterology and Hepatology, Isala Kliniek - Department of Gastroenterology and Hepatology, Isala Kliniek - Department of Gastroenterology and Hepatology, Catharina Hospital - Department of Gastroenterology and Hepatology, Catharina Hospital - Department of Gastroenterology and Hepatology, Erasmus University Rotterdam (EUR) - Department of Gastroenterology & Hepatology, Erasmus University Rotterdam (EUR) - Department of Gastroenterology & Hepatology, IJsselland Hospital - Department of Gastroenterology and Hepatology, University of Groningen - Department of Gastroenterology and Hepatology, University of Groningen - Department of Gastroenterology and Hepatology, Haga Hospital - Department of Gastroenterology and Hepatology, Hirslanden Private Hospital Group - Centre of Gastroenterology, Utrecht University - Julius Center for Health Sciences and Primary Care, University of Amsterdam - Department of Gastroenterology and Hepatology and University of Amsterdam - Department of Gastroenterology and Hepatology