1. Warren Alpert Medical School of Brown University, Providence, RI, USA
2. University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
3. Department of Otolaryngology Head and Neck Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
4. Department of Otolaryngology Head and Neck Surgery, Tufts University Medical Center, Boston, MA, USA
5. Division of Otolaryngology Head and Neck Surgery, Hasbro Children’s Hospital/Rhode Island Hospital, Providence, RI, USA
6. Department of Otolaryngology Head and Neck Surgery, University of California San Francisco, San Francisco, CA, USA