Affiliation: | 1. Department of Surgery, Mayo Clinic, Rochester, Minnesota;2. Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas;3. Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas;4. Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas;5. Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas |