1. Department of Otolaryngology – Head and Neck Surgery Mass Eye and Ear Boston Massachusetts U.S.A.
2. Harvard Medical School Boston Massachusetts U.S.A.
3. Department of Otolaryngology – Head & Neck Surgery Medical University of South Carolina Charleston South Carolina U.S.A.
4. Caruso Department of Otolaryngology, Head and Neck Surgery University of Southern California Los Angeles California U.S.A.
5. Department of Anesthesiology Mass Eye and Ear Boston Massachusetts U.S.A.