1. Medical College of Wisconsin Milwaukee Wisconsin
2. Departments of Otolaryngology–Head and Neck Surgery Thomas Jefferson University and Graduate Hospital Philadelphia Pennsylvania
3. Department of Otolaryngology–Head and Neck Surgery University of Colorado School of Medicine Denver Colorado
4. Department of Otolaryngology Northwestern University School of Medicine Chicago Illinois
5. Department of Otolaryngology Beth Israel Medical Center New York New York
6. Department of Otolaryngology–Head and Neck Surgery George Washington University School of Medicine Washington, DC