1. Department of Hematology/Oncology, Massachusetts General Hospital, Boston, Massachusetts;
2. Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts;
3. Biostatistics Center, Massachusetts General Hospital, Boston, Massachusetts;
4. Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts;
5. Department of General and Gastrointestinal Surgery, Massachusetts General Hospital, Boston, Massachusetts;
6. Department of Surgical Oncology, Massachusetts General Hospital, Boston, Massachusetts;
7. Department of Hematology Oncology, North Shore Cancer Center, Danvers, Massachusetts