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