1. Department of Otolaryngology-Head and Neck Surgery, University of South Florida, Tampa, Florida
2. College of Public Health, University of South Florida, Tampa, Florida
3. Department of Otolaryngology: Head and Neck Surgery, Icahn School of Mount Sinai, NYC, New York
4. Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
5. Department of Otorhinolaryngology-Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
6. Department of Otolaryngology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts
7. New England Ear Nose and Throat, Newton, Massachusetts
8. Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania
9. Department of Otolaryngology-Head and Neck Surgery, Temple University, Philadelphia, Pennsylvania
10. Office of Clinical Research, University of Pennsylvania, Philadelphia, Pennsylvania
11. Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
12. Department of Otolaryngology-Head and Neck Surgery, University of Maryland Medical Center, Baltimore, Maryland