1. Department of Otolaryngology and Communicative Sciences, University of Mississippi Medical Center, Jackson, Mississippi, USA
2. Department of Otolaryngology/Head and Neck Surgery, University of California, Irvine, California, USA
3. Department of Otology and Laryngology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
4. Department of Family Medicine, University of Mississippi Medical Center, Jackson, Mississippi, USA
5. Department of Otolaryngology/Head and Neck Surgery, Temple University School of Medicine, Philadelphia, Pennsylvania, USA
6. Department of Otolaryngology/Head and Neck Surgery, Baylor College of Medicine, Houston, Texas, USA
7. Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA