Affiliation: | 1. University of California, San Diego School of Medicine, San Diego, California, U.S.A;2. Department of Radiology, University of California, San Diego School of Medicine, San Diego, California, U.S.A.;3. Division of Otolaryngology–Head and Neck Surgery, University of California, San Diego School of Medicine and VA San Diego Healthcare System, San Diego, California, U.S.A |