1. Department of Otolaryngology – Head & Neck Surgery Mayo Clinic Arizona Phoenix Arizona USA
2. Department of Otolaryngology/Head and Neck Surgery Louisiana State University Health Sciences Center & Feist‐Weiller Cancer Center Shreveport Louisiana USA
3. Department of Surgery Overton Brooks Veterans Affairs Medical Center (OBVAMC) Shreveport Louisiana USA
4. Head and Neck Specialists, HCA South Atlantic, Sarah Cannon Cancer Institute Charleston South Carolina USA