Affiliation: | 1. Department of Otolaryngology–Head and Neck Surgery, Mayo Clinic School of Medicine, Rochester, Minnesota;2. Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, U.S.A.;3. Department of Radiology, Mayo Clinic School of Medicine, Rochester, Minnesota;4. Department of Neurologic Surgery, Mayo Clinic School of Medicine, Rochester, Minnesota |