1. Department of Gastroenterology and Hepatology, Erasmus Medical Center Cancer Institute, Rotterdam, The Netherlands
2. Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of North Carolina, Chapel Hill, North Carolina, USA
3. Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
4. Department of Medical and Surgical Sciences, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
5. Klinik für Innere Medizin und Gastroenterologie, Elisabeth Krankenhaus Essen, Essen, Germany
6. Liver Unit, Hospital Clínic, Barcelona, Spain
7. Gedyt Endoscopy Center, Buenos Aires, Argentina
8. Department Gastroenterology and Endoscopy, Ospedale di Sanremo, Sanremo, Italy
9. Department of Gastroenterology, National Cancer Institute, Bari, Italy
10. Brachytherapy Department, Greater Poland Cancer Center, Poznan, Poland; Electroradiology Department, Poznan University of Medical Sciences, Poland
11. Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
12. Department of Internal Medicine I, Ulm University, Ulm, Germany
13. Department of Gastroenterology and Hepatology, Hôpital Erasme, Free University of Brussels, Brussels, Belgium.
14. Department of Gastroenterology, Nuovo Regina Margherita Hospital, Rome, Italy
15. Endoscopy Unit, IRCCS Istituto Clinico Humanitas, Rozzano, Milan, Italy