1. Department of Otolaryngology-Head and Neck Surgery; Saint Louis University; St. Louis Missouri
2. Department of Otolaryngology-Head and Neck Surgery; University of Kentucky; Lexington Kentucky
3. Department of Surgery; Division of Otolaryngology-Head and Neck Surgery; Duke University; Durham North Carolina
4. Department of Otolaryngology-Head and Neck Surgery; University of Virginia; Charlottesville Virginia
5. Department of Otolaryngology-Head and Neck Surgery; University of Pittsburgh; Pittsburgh Pennsylvania
6. Department of Otolaryngology-Head and Neck Surgery; Georgia Regents University; Augusta Georgia U.S.A