1. Department of Otolaryngology–Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
2. Department of Otolaryngology–Head and Neck Surgery, University of California, San Francisco, California, USA
3. Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University, Nashville, Tennessee, USA
4. Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, USA
5. Division of Otolaryngology–Head and Neck Surgery, University of Utah, Salt Lake City, Utah, USA
6. Deptartment of Psychiatry and Human Behavior, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
7. Friends Select School, Philadelphia, Pennsylvania, USA