1. Department of Otolaryngology—Head and Neck Surgery, Medstar Georgetown University Hospital, Washington, District of Columbia, USA.
2. Department of Otolaryngology—Head and Neck Surgery, Beckman Laser Institute and Medical Clinic, University of California—Irvine, Irvine, California, USA.
3. Department of Facial Plastic and Reconstructive Surgery, Edge Day Hospital, Port Elizabeth, Eastern Cape, South Africa.
4. Department of Otolaryngology—Head and Neck Surgery, University of California—Irvine, Orange, California, USA.
5. Department of Biomedical Engineering, University of California—Irvine, Irvine, California, USA.