1. Department of Otolaryngology–Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, USA
2. Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
3. Department of Otolaryngology–Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois, USA
4. Division of Otolaryngology–Head and Neck Surgery, University of Utah Medical Center, Salt Lake City, Utah, USA
5. Department of Otolaryngology–Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
6. Department of Otolaryngology–Head and Neck Surgery, Northwestern University, Chicago, Illinois, USA
7. Department of Otolaryngology–Head and Neck Surgery, The Ohio State University, Columbus, Ohio, USA
8. Department of Otolaryngology–Head and Neck Surgery, University of North Carolina, Chapel Hill, North Carolina, USA
9. Department of Otolaryngology–Head and Neck Surgery, University of Tennessee, Memphis, Tennessee, USA
10. Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
11. Department of Otolaryngology–Head and Neck Surgery, Baylor College of Medicine, Houston, Texas, USA
12. Department of Otolaryngology–Head and Neck Surgery, New York Eye and Ear Infirmary of Mount Sinai, New York, New York, USA
13. Department of Otolaryngology–Head and Neck Surgery, Mayo Clinic, Scottsdale, Arizona, USA