1. Department of Otolaryngology-Head and Neck Surgery; Massachusetts Eye and Ear Infirmary
2. Department of Otology and Laryngology
3. Department of Otolaryngology-Head and Neck Surgery Department; Federal University of Sao Paulo; Sao Paulo Brazil
4. Department of Pathology; Harvard Medical School
5. Department of Pathology; Massachusetts General Hospital; Boston Massachusetts U.S.A.