1. Department of Otolaryngology–Head and Neck Surgery, University of Michigan, Ann Arbor
2. Comprehensive Cancer Center Biostatistics Unit, University of Michigan, Ann Arbor
3. Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor
4. Department of Otolaryngology–Head and Neck Surgery, University of Michigan, Ann Arbor4now with Department of Otolaryngology–Head and Neck Surgery, Ohio State University Medical Center, Columbus
5. Department of Otolaryngology–Head and Neck Surgery, University of Michigan, Ann Arbor5Comprehensive Cancer Center, University of Michigan, Ann Arbor
6. Comprehensive Cancer Center, University of Michigan, Ann Arbor6Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor
7. Comprehensive Cancer Center, University of Michigan, Ann Arbor7Department of Radiation Oncology, University of Michigan, Ann Arbor