1. Lineberger Comprehensive Cancer Center University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
2. Department of Otolaryngology – Head and Neck Surgery, School of Medicine University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. Division of Medical Oncology, Department of Medicine University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
4. Department of Otolaryngology – Head and Neck Surgery Washington University School of Medicine St. Louis Missouri USA
5. Department of Pathology, School of Medicine University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
6. International Agency for Research on Cancer WHO Lyon France