1. Department of Otolaryngology—Head and Neck Surgery, University of California, Irvine, Irvine, California, USA.
2. Department of Otolaryngology—Head and Neck Surgery, MedStar Georgetown University Hospital, Washington, District of Columbia, USA.
3. School of Biomedical Engineering, University of California Irvine, Irvine, California, USA.
4. Beckman Laser Institute and Medical Clinic, Irvine, California, USA.