1. Department of Otolaryngology – Head and Neck Surgery University of North Carolina School of Medicine Chapel Hill North Carolina USA
2. Division of Hematology and Oncology, Department of Medicine The University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. Department of Otolaryngology – Head and Neck Surgery Washington University School of Medicine in St. Louis St. Louis Missouri USA
4. Department of Pathology University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
5. Department of Epidemiology University of North Carolina at Chapel Hill Chapel Hill North Carolina USA