1. Division of Hematology and Oncology, Abramson Cancer Center, University of Pennsylvania, Pennsylvania, USA
2. Division of Medical Oncology, Mayo Clinic Cancer Center, Rochester, Minnesota, USA
3. Division of Medical Oncology, University of Ottawa, Ottawa, Ontario, Canada
4. Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
5. Department of Medicine, University of California, San Francisco, California, USA
6. Division of Gastrointestinal Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
7. Department of Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
8. Division of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
9. Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
10. Division of Molecular Imaging and Therapy, Oregon Health & Science University, Portland, Oregon, USA
11. Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
12. Department of Surgery, University of California, San Francisco, California, USA
13. Department of Medicine, Gastrointestinal Oncology Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
14. Division of Oncology, Huntsman Cancer Institute, University of Utah, Salt Lake City, Salt Lake City, Utah, USA
15. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
16. Department of Hematology and Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
17. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA