1. Division of Otolaryngology-Head and Neck Surgery; University of California, San Diego; San Diego California U.S.A.
2. Department of Otorhinolaryngology; University Hospital Essen, University of Duisburg-Essen; Essen Germany.
3. Department of Pharmacology; University of California, San Diego; San Diego California U.S.A.
4. Moores Cancer Center; University of California, San Diego; San Diego California U.S.A.