1. Department of Otolaryngology – Head and Neck Surgery Temple University Philadelphia Pennsylvania USA
2. Department of Otorhinolaryngology – Head and Neck Surgery Montefiore Medical Center, Albert Einstein College of Medicine Bronx New York USA
3. Department of Otolaryngology – Head and Neck Surgery Penn State College of Medicine Hershey Pennsylvania USA
4. Department of Otolaryngology – Head and Neck Surgery Tufts University Boston Massachusetts USA
5. Department of Otolaryngology – Head and Neck Surgery Kaiser Permanente Los Angeles California USA
6. University of Florida Health Gainesville Florida USA
7. Department of Otolaryngology – Head and Neck Surgery Massachusetts Eye and Ear Infirmary Boston Massachusetts USA
8. Ochsner Medical Center New Orleans Louisiana USA
9. Memorial Sloan Kettering Cancer Center Head and Neck Radiation Oncology New York City New York USA
10. Division of Hematology/Oncology, Department of Medicine University of Pittsburgh Pittsburgh Pennsylvania USA
11. Department of Otolaryngology – Head and Neck Surgery University of Arizona Tucson Arizona USA