1. Department of Otolaryngology – Head and Neck Surgery Massachusetts Eye and Ear Boston Massachusetts USA
2. Department of Otolaryngology – Head and Neck Surgery Harvard Medical School Boston Massachusetts USA
3. Department of Otolaryngology – Head and Neck Surgery Mount Sinai Hospital New York City New York USA
4. Department of Otolaryngology – Head and Neck Surgery University of California San Francisco San Francisco California USA
5. Department of Otolaryngology – Head and Neck Surgery Michigan Medicine Ann Arbor Michigan USA
6. Center for Surgical Training and Research, Department of Surgery Michigan Medicine Ann Arbor Michigan USA
7. Department of Otolaryngology – Head and Neck Surgery Boston University Medical Center Boston Massachusetts USA