| Affiliation: | (1) Department of Gastroenterology, Institut de Malalties Digestives, Hospital Clinic, Institut d’lnvestigacions Biomediques August Pi i Sunyer, University of Barcelona, Barcelona, Catalonia, Spain;(2) Department of Surgery, Institut de Malalties Digestives, Hospital Clinic, Institut d’lnvestigacions Biomediques August Pi i Sunyer, University of Barcelona, Barcelona, Catalonia, Spain;(3) Department of Gastroenterology, Hospital Clínic, Villarroel 170, 08036 Barcelona, Catalonia, Spain |
