Affiliation: | 1. Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado;2. Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado;3. Denver Veterans Affairs Medical Center, Eastern Colorado Health Care System, Denver, Colorado;4. Department of Pathology, University of Colorado School of Medicine, Aurora, Colorado;5. Department of Biostatistics, University of Colorado School of Public Health, Aurora, Colorado |