1. Department of Otorhinolaryngology—Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
2. Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
3. Department of Otorhinolaryngology—Head and Neck Surgery, Oregon Health Sciences University, Portland, Oregon, USA.
4. Oral and Maxillofacial Surgery Department, Oregon Health Sciences University, Portland, Oregon, USA.
5. Department of Otolaryngology—Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
6. Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania, USA.