[1
]Division of Gastroenterology, San Giovanni Battista University Teaching Hospital,
Turin, Italy
[2
]Digestive Endoscopy Unit, Catholic University, Rome, Italy
[3
]Department of Gastroenterology, Chaim Sheba Medical Center, Sackler School of Medicine,
Tel-Aviv University Tel-Hashomer, Israel
[4
]Klinik für Innere Medizin, Bethesda Krankenhaus Bergedorf, Hamburg, Germany
[5
]Department of Medicine II, Sana Klinikum, Offenbach, Germany
[6
]Department of Gastroenterology and Hepatology, VU University Medical Centre, Amsterdam,
The Netherlands
[7
]Gastroenterology Unit, Ospedale Valduce, Como, Italy
[8
]Division of Gastroenterology, Shaare Zedek Medical Center, Jerusalem, Israel
[9
]Department of Medicine I, Johann Wolfgang Goethe University Frankfurt, Frankfurt,
Germany
[10
]Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service
d'Hépato-gastro-entérologie, Paris, France
[11
]Medizinische Klinik, Evangelisches Krankenhaus, Düsseldorf, Germany
[12
]Department of Hepato-Gastroenterology, Nouvel Hôpital Civil, University Hospital of
Strasbourg, Strasbourg, France
[13
]Royal Free Unit for Endoscopy and Centre for Gastroenterology, The Royal Free Hospital
and University College London, London, UK
[14
]Department of Medicine B, University of Münster, Münster, Germany
[15
]Institute of Gastroenterology and Liver Diseases, Ha’emek Medical Center Afula, Israel,
Rappaport Faculty of Medicine, Technion-Israel Institute of Technology Haifa, Israel
[16
]Department of Gastroenterology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals
NHS Foundation Trust, Sheffield, UK
[17
]Gastroenterology Department, Centro Hospitalar do Alto Ave, Guimarães, Portugal.
[18
]Clinical Psychology Unit, Department of Psychology, University of Sheffield.
[19
]Centre Hospitalier Lyon Sud, Pierre Bénite, Lyon, France
[20
]Gedyt Endoscopy Center, Buenos Aires, Argentina