1. Department of Otolaryngology; Georgia Regents University; Augusta Georgia
2. Department of Otolaryngology; UC Davis Health System; Sacramento California
3. Department of Otolaryngology; UCSF Medical Center; San Francisco California
4. Department of Otolaryngology-Head & Neck Surgery; University of Washington Medical Center; Seattle Washington
5. Department of Otolaryngology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania U.S.A