1. Department of Health Sciences Research, Mayo Clinic, 200 First Street, SW Rochester, MN 55905, USA
2. Mediclinic City Hospital: North Wing, Dubai Health Care City, Dubai UAE
3. Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
4. School of Public Health and Preventative Medicine, Monash University, Melbourne, Australia
5. Department of Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
6. NIHR Clinical Research Network, Leeds, UK
7. CRUK/MRC Oxford Institute for Radiation Oncology, Oxford, UK
8. Memory Sloan Kettering Cancer Center, New York, NY, USA
9. Digestive Oncology, University Hospitals Gasthuisberg Leuven and KU Leuven, Leuven, Belgium
10. Department of Medicine, The University of California San Francisco, San Francisco, CA, USA
11. Klinik fur Innere Med IV, University Clinic Halle, Saale, Germany
12. Department of Oncology, West Virginia University, Morgantown, WV, USA
13. Centro de Oncologia de Brasilia do Sirio Libanes: Unidade Lago Sul, Siro Libanes, Brazil
14. Ronald Reagan UCLA Medical Center, UCLS Medical Center, Santa Monica, CA, USA
15. Duke Cancer Institute, Duke University, Durham, NC, USA
16. Department of Medical Oncology, University of Amsterdam, Amsterdam, The Netherlands
17. Department Oncology, Hospital Clínico San Carlos, Madrid, Spain
18. Department of Medical Oncology, University Medical Center Utrecht, University of Utrecht, Utrecht, The Netherlands
19. Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
20. Department of Medical Oncology and Comprehensive Cancer Center, University of Munich, Munich, Germany
21. Hopital Henri Mondor, Creteil, France
22. Department of Oncology, Hematology and Bone Marrow Transplantation with Section of Pneumology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
23. Director of Yale Cancer Center, Boston, MA, USA
24. Sydney Medical School, University of Sydney, Sydney, Australia
25. University of Crete, Heraklion, Greece
26. University of Nantes Medical School, Nantes, France
27. UCLA Medical Center, Santa Monica, CA, USA
28. Department of Medical Oncology, Franco-British Institute, Levallois-Perret, France
29. West Cancer Center, Germantown, TN, USA
30. Cardiff University and Velindre Cancer Center, Cardiff, UK