Affiliation: | 1. Digestive Disease Center, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy;2. Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy;3. Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK Leeds Gastroenterology Institute, St. James's University Hospital, Leeds, UK;4. Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK |