| Affiliation: | 1. Department of Otorhinolaryngology, Mayo Clinic School of Medicine, Rochester, Minnesota;2. Department of Neurologic Surgery, Mayo Clinic School of Medicine, Rochester, Minnesota;3. Division of Health Care Policy and Research and the Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic School of Medicine, Rochester, Minnesota;4. Bobby R. Alford Department of Otolaryngology–Head and Neck Surgery, Baylor College of Medicine, Houston, Texas;5. Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University, Nashville, Tennessee, U.S.A |
