1. University Hospitals Leuven, Leuven, Belgium;
2. University of Southern California, Los Angeles, CA;
3. Department of Medical Oncology, Kyorin University School of Medicine, Tokyo, Japan;
4. Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology, Barcelona, Spain, Barcelona, Spain;
5. Comprehensive Cancer Center, Ludwig-Maximilian-University of Munich, Munich, Germany;
6. Hepatobiliary and Pancreatic Oncology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Japan;
7. N. N. Blokhin Russian Cancer Research Center, Moscow, Russia;
8. Division of Hepatobiliary and Pancreatic Oncology, Kanagawa Cancer Center, Yokohama, Japan;
9. Jász-Nagykun Szolnok Megyei Hetényi Géza Kórház-Rendelointézet, Szolnok, Hungary;
10. Hammersmith Hospital, Imperial College, London, United Kingdom;
11. Palacky University Medical School and Teaching Hospital, Olomouc, Czech Republic;
12. Masaryk Memorial Cancer Institute, Brno, Czech Republic;
13. Vall d'Hebron Institute of Oncology, Barcelona, Spain;
14. Medical Oncology Department, Ramon y Cajal University Hospital, IRYCIS, RETICC of Spanish Ministry of Science and Innovation, Madrid, Spain;
15. Regional Oncology Center, Lodz, Poland;
16. University of Debrecen, Debrecen, Hungary;
17. Digestive Oncology Unit, University Hospitals Leuven, Department of Oncology, KU Leuven, Leuven, Belgium;
18. Merck KGaA, Darmstadt, Germany;
19. EMD Serono, Billerica, MA;
20. Sarah Cannon Research Institute, Nashville, TN;