Affiliation: | 1.Division of Otolaryngology–Head and Neck Surgery, Department of Surgery, University of California, San Diego, La Jolla, California 92093, USA;2.Department of Pediatrics, University of California, San Diego, La Jolla, California 92093, USA;3.Veterans Administration Medical Center and Department of Pathology, University of California, San Diego, La Jolla, California 92161, USA |