1. Department of Otorhinolaryngology: Head and Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
2. Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
3. Department of Otorhinolaryngology: Head and Neck Surgery, Mayo Clinic, Rochester, MN, USA
4. Department of Oral and Maxillofacial Surgery, University of Pennsylvania, Philadelphia, PA, USA