1. Division of Head and Neck Surgery, Department of Otolaryngology–Head and Neck Surgery University of Minnesota Minneapolis Minnesota U.S.A.
2. Division of Head and Neck Surgery, Department of Otolaryngology–Head and Neck Surgery Hennepin Healthcare Research Institute/Hennepin County Medical Center Minneapolis Minnesota U.S.A.
3. Biostatistics and Bioinformatics Core Masonic Cancer Center University of Minnesota Minneapolis Minnesota U.S.A.
4. Department of Medicine Division of General Internal Medicine University of Minnesota Minneapolis Minnesota U.S.A.
5. Department of Education University of Minnesota Minneapolis Minnesota U.S.A.