1. Department of Otolaryngology Loyola University Medical Center Maywood Illinois USA
2. Department of Otolaryngology University Hospitals Cleveland Medical Center Cleveland Ohio USA
3. Department of Otolaryngology David Geffen School of Medicine at University of California Los Angeles Los Angeles California USA
4. Department of Otolaryngology University of Iowa Health Care Iowa City Iowa USA
5. Department of Otolaryngology University of Kansas Medical Center Kansas City Kansas USA
6. Department of Otolaryngology University of Pennsylvania Medicine Philadelphia Pennsylvania USA
7. Caruso Department of Otolaryngology University of Southern California Los Angeles California USA
8. Dallas/Fort Worth Head & Neck Cancer Center of Texas Texas USA
9. Department of Otolaryngology Henry Ford Health Detroit Michigan USA
10. Department of Otolaryngology Baylor College of Medicine Houston Texas USA
11. Department of Otolaryngology Washington University School of Medicine St. Louis Missouri USA
12. Department of Otolaryngology‐Head & Neck Surgery University of Alabama at Birmingham Birmingham Alabama USA
13. Department of Otolaryngology Oregon Health & Science University Portland Oregon USA