[1] The University of Texas MD Anderson Cancer Center,Department of Gastrointestinal (GI) Medical Oncology, Division of Cancer Medicine
[2] The University of Texas MD Anderson Cancer Center,Department of Diagnostic Radiology, Division of Diagnostic Imaging
[3] The University of Texas MD Anderson Cancer Center,Department of Investigational Cancer Therapeutics, Division of Cancer Medicine
[4] Scott & White Clinic,Department of Radiation Oncology, Division of Radiation Oncology
[5] The University of Texas MD Anderson Cancer Center,Department of Gastroenterology
[6] The University of Texas MD Anderson Cancer Center,Departments of Medicine and Surgery
[7] Gibbs Cancer Center & Research Institute,undefined
[8] Columbia University,undefined