1. Department of Otolaryngology, Henry Ford Hospital, Detroit, Michigan, USA
2. New York Otology, New York, New York, USA
3. Division of Otolaryngology–Head & Neck Surgery, University of Kentucky Chandler Medical Center, Lexington, Kentucky, USA
4. Department of Otolaryngology, SUNY Downstate Medical Center and Long Island College Hospital, Brooklyn, New York, USA
5. Department of Otolaryngology, Virginia Mason Hospital and Medical Center, Seattle, Washington, USA
6. Department of Otolaryngology, Mayo Clinic Arizona, Phoenix, Arizona, USA
7. Department of Family and Community Medicine, University of Arizona School of Medicine, Phoenix, Arizona, USA
8. Department of Neurology, University of Arizona, Phoenix, Arizona, USA
9. Coronado, California, USA
10. Department of Family and Preventive Medicine, University of California San Diego, La Jolla, California, USA
11. ENT Specialists of Northern Virginia, Falls Church, Virginia, USA
12. Department of Emergency Medicine, Henry Ford Hospital, Detroit, Michigan, USA
13. Weill Cornell Medical College, New York, New York, USA
14. Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
15. Division of Otolaryngology Head and Neck Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
16. Department of Otolaryngology, Washington University School of Medicine, St Louis, Missouri, USA
17. Center for LGBT Social Science & Public Policy, Hunter College, City University of New York, New York, New York, USA
18. American Academy of Otolaryngology–Head and Neck Surgery Foundation, Alexandria, Virginia, USA