1. Department of Internal Medicine, Division of Hematology and Oncology University of Michigan Ann Arbor Michigan USA
2. Rogel Cancer Center University of Michigan Ann Arbor Michigan USA
3. Department of Biostatistics University of Michigan Ann Arbor Michigan USA
4. Department of Otolaryngology—Head and Neck Surgery University of Michigan Ann Arbor Michigan USA
5. Department of Radiation Oncology University of Michigan Ann Arbor Michigan USA
6. Department of Radiology University of Michigan Ann Arbor Michigan USA