1. Department of Medicine, Division of Hematology, Duke University Medical Center, Durham, North Carolina;
2. Optical Molecular Imaging and Analysis Core, Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina;
3. Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina;
4. Department of Medicine, Division of Pulmonary, Allergy, Critical Care Medicine, Duke University Medical Center, Durham, North Carolina; and
5. Durham Veterans Affairs Medical Center, Durham, North Carolina