1. Department of Otolaryngology-Head and Neck Surgery; Oregon Health & Science University; Portland OR
2. Department of Otolarynoglogy-Head and Neck Surgery; Vanderbilt University Medical Center; Nashville TN
3. Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, School of Medicine; University of Utah; Salt Lake City UT
4. Department of Otolaryngology-Head & Neck Surgery; Stanford University; Stanford CA
5. Department of Surgery, Division of Otolaryngology, School of Medicine; University of California-San Diego San Diego; CA