1. Head and Neck Surgical Group, New York, NY
2. Department of Otolaryngology–Head and Neck Surgery, University of California-Irvine, Irvine, CA
3. Division of Otolaryngology–Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
4. National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
5. Department of Otolaryngology–Head and Neck Surgery, University of Washington School of Medicine, Seattle, WA
6. Department of Otolaryngology–Head and Neck Surgery, University of Iowa, Iowa City, IA
7. Department of Physical Medicine and Rehabilitation, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
8. University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
9. Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA
10. Department of Otolaryngology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
11. Department of Surgery, Division of Otolaryngology, Harvard Medical School, Boston MA
12. Department of Otorhinolaryngology, Weill Medical College of Cornell University, New York, NY
13. University of Iowa, Iowa City, IA
14. Department of Otolaryngology, Mt Sinai School of Medicine, New York, NY
15. Department of Otolaryngology–Head and Neck Surgery, Southern Illinois University, Springfield, IL