1. Vita‐Salute San Rafaele University Milan Italy
2. Department of Medical Oncology San Rafaele Scientifc Institute IRCCS Milan Italy
3. Department of Medical Oncology University Hospital of Cagliari Cagliari Italy
4. Department of Internal Medicine Japanese Red Cross Society Himeji Hospital Himeji Japan
5. Department of Oncology Asan Medical Center University of Ulsan College of Medicine Seoul Korea
6. Division of Gastroenterology Department of Medicine Kurume University School of Medicine Kurume Japan
7. Department of Translational Research and New Surgical and Medical Technologies University of Pisa Pisa Italy
8. Medical Oncology Unit 1 Veneto Institute of Oncology IOV – IRCCS Padova Italy
9. Department of Medical Oncology Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS Meldola Italy
10. Medical Oncology Unit IRCCS IstitutoTumori "Giovanni Paolo II" of Bari Bari Italy
11. Department of Biomedical Sciences and Human Oncology University of Bari "Aldo Moro" Bari Italy
12. Division of Internal Medicine IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy
13. Department of Medical and Surgical Sciences University of Bologna Bologna Italy
14. Faculty of Nursing Gifu Kyoritsu University Ogaki Japan
15. Gastroenterology Center Ehime Prefectural Central Hospital Matsuyama Japan
16. Division of Gastroenterology and Hepatology Department of Internal Medicine Nippon Medical School Tokyo Japan
17. Center of Gastroenterology Teine Keijinkai Hospital Sapporo Japan
18. Department of Gastroenterology Asahi General Hospital Asahi Japan
19. Department of Gastroenterology and Hepatology Ogaki Municipal Hospital Ogaki Japan
20. Second Department of Internal Medicine Osaka Medical College Takatsuki Japan
21. Department of Biomedical Sciences Humanitas University Milan Italy
22. Medical Oncology and Hematology Unit Humanitas Cancer CenterIRCCS Humanitas Research Hospital Milan Italy