1. Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota
2. Department of Neurosurgery, University of South Florida, Tampa, Florida
3. Michigan Ear Institute, Farmington Hills, Michigan
4. Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts
5. Department of Neurological Surgery, The University of Texas Southwestern Medical Center, Dallas, Texas
6. Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
7. Department of Otolaryngology, Head, Neck and Skull Base Surgery, St Vincent's Hospital, Sydney, Australia
8. Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland
9. Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Jacksonville, Florida
10. Department of Otolaryngology–Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
11. Department of Otorhinolaryngology–Head and Neck Surgery and Audiology, University Hospital of Copenhagen, Copenhagen, Denmark
12. Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine of Mount Sinai, New York, New York
13. Department of Otolaryngology–Head and Neck Surgery, Mayo Clinic, Phoenix, Arizona
14. Department of Otolaryngology–Head and Neck Surgery
15. Division of Otolaryngology–Head and Neck Surgery, Dalhousie University, Halifax, Nova Scotia, Canada
16. Department of Otolaryngology, University of Utah Health, Salt Lake City, Utah
17. Department of Otolaryngology–Head and Neck Surgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa
18. Department of Otolaryngology–Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania
19. Department of Neurosurgery, AP-HP, Hôpital Pitié-Salpêtrière, Sorbonne Université, Paris, France
20. Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California
21. Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester, UK
22. Department of Otolaryngology–Head and Neck Surgery, Loyola University Medical Center, Chicago, Illinois
23. Department of Otolaryngology, IdiPAZ Institute for Health Research, La Paz University Hospital; Biomedical Research Networking Centre on Rare Diseases (CIBERER-U761), Institute of Health Carlos III, Madrid, Spain
24. Department of Otolaryngology Head and Neck Surgery, Manchester Royal Infirmary, Manchester Academic Health Science Centre, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
25. Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
26. Department of Neurosurgery, University of Würzburg, Würzburg, Germany
27. Department of Otorhinolaryngology–Head and Neck Surgery, Montefiore Medical Center, Bronx, New York
28. Department of Otolaryngology–Head and Neck Surgery, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
29. Department of Otolaryngology–Head and Neck Surgery, Indiana University, Indianapolis, Indiana
30. Department of Neurosurgery, Emory University, Atlanta, Georgia
31. Department of Neurologic Surgery
32. Department of Otolaryngology-Head and Neck Surgery, New York University Grossman School of Medicine, New York, New York
33. Bobby R. Alford Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas
34. Neurosurgical Clinic, Department of Neurosurgery and Neurotechnology, Eberhard Karls University, Tuebingen, Germany
35. Houston Methodist ENT Specialists, Houston, Texas