1. Department of Biology, University of Pisa, Pisa, Italy
2. Genomic Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
3. Genetic and Molecular Epidemiology Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
4. CIBERONC, Madrid, Spain
5. Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
6. Pancreato-Biliary Endoscopy and Endosonography Division, Pancreas Translational and Clinical Research Center, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute, Milan, Italy
7. Sant’Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Rome, Italy
8. First Department of Medicine, University of Szeged, Szeged, Hungary
9. Department of Surgery, Oncology and Gastroenterology-DiSCOG, University of Padova, Padua, Italy
10. Department of Surgery, Faculty Hospital Kralovske Vinohrady and Third Faculty of Medicine, Charles University, Prague, Czech Republic
11. Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
12. Digestive Endoscopy Unit, Division of Gastroenterology, Humanitas Research Hospital, Milan, Italy
13. Department of Surgery I, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Olomouc, Czech Republic
14. Department of Digestive Tract Diseases, Medical University of Łodz, Łodz, Poland
15. Fundeni Clinical Institute, Bucharest, Romania
16. Department of General Surgery, University of Heidelberg, Heidelberg, Germany
17. Institute of Biology and Medical Genetics, First Medical Faculty, Prague, Czech Republic
18. Institute of Experimental Medicine, Czech Academy of Sciences, Prague, Czech Republic
19. Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
20. Szent György University Teaching Hospital of Fejér County, Székesfehérvár, Hungary
21. Department of Surgery, The Pancreas Institute, University and Hospital Trust of Verona, Verona, Italy
22. Colorectal Unit, First Department of Propaedeutic Surgery, Athens Medical School, National and Kapodistrian University of Athens, Athens, Greece
23. Department of Laboratory Medicine, University Hospital of Padova, Padua, Italy
24. Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
25. Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany
26. German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
27. ARC-NET: Centre for Applied Research on Cancer, University and Hospital Trust of Verona, Verona, Italy
28. General Surgery Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
29. Department of Gastroenterology and Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas, Lithuania
30. Unità Operativa Chirurgia Generale e dei Trapianti, University of Pisa, Pisa, Italy
31. Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
32. Division of Experimental Oncology, Gastroenterology and Gastrointestinal Endoscopy Unit, Vita-Salute San Raffaele University, IRCCS Ospedale San Raffaele Scientific Institute, Milan, Italy
33. Division of Gastroenterology and Research Laboratory, IRCCS Scientific Institute and Regional General Hospital ‘Casa Sollievo della Sofferenza’, San Giovanni Rotondo, Italy
34. Division of Gastroenterology, San Carlo Hospital, Potenza, Italy
35. Division of Surgical Pathology, Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
36. Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland