1. Department of Otolaryngology–Head and Neck Surgery University of Miami Miami Florida U.S.A.
2. Department of Otolaryngology–Head and Neck Surgery Oregon Health and Science University Portland Oregon U.S.A.
3. Department of Otolaryngology–Head and Neck Surgery Thomas Jefferson University Philadelphia Pennsylvania U.S.A.
4. School of Medicine Louisiana State University Health Science Center – New Orleans New Orleans Louisiana U.S.A.
5. Department of Otolaryngology–Head and Neck Surgery Louisiana State University Health Science Center – New Orleans New Orleans Louisiana U.S.A.
6. Oregon Health and Science University School of Medicine Portland Oregon U.S.A.