1. Department of Otolaryngology-Head and Neck Surgery; Kaiser Permanente Medical Center; Oakland California U.S.A.
2. Department of Otolaryngology Head and Neck Surgery; Univerisity of California San Francisco; San Francisco California U.S.A.
3. Department of Otolaryngology-Head and Neck Surgery; University of Southern California Caruso; Los Angeles California U.S.A.
4. Department of Radiology; Kaiser Permanente Medical Center; Santa Clara California U.S.A.
5. Departments of Dermatology and Pediatrics; Univerisity of California San Francisco; San Francisco California U.S.A.