1. Division of Surgical Oncology, Department of Surgery, Massachusetts General Hospital, Boston, MA
2. Harvard Medical School, Boston, MA
3. Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
4. Department of Orthopaedics, Massachusetts General Hospital, Boston, MA
5. Department of Biostatistics Center, Massachusetts General Hospital, Boston, MA
6. Department of Radiation Oncology, University of California, Davis, Sacramento, CA
7. Department of Pathology, University of Pittsburgh, Pittsburgh, PA
8. Department of Radiation Oncology, University of Pittsburgh, Pittsburgh, PA
9. Division of General and Gastrointestinal Surgery, Department of Surgery, Massachusetts General Hospital, Boston, MA
10. Department of Pathology, Massachusetts General Hospital, Boston, MA