1. Department of Otolaryngology Head and Neck Surgery University of Cincinnati Medical Center Cincinnati Ohio U.S.A.
2. Department of Surgical Services Cincinnati Veterans Affairs Medical Center Cincinnati Ohio U.S.A.
3. Department of Otolaryngology 96th Medical Group Eglin Air Force Base Florida U.S.A.
4. Department of Otolaryngology‐Head and Neck Surgery University of Michigan Health System Ann Arbor Michigan U.S.A.
5. Division of Biostatistics and Epidemiology Cincinnati Children's Hospital Medical Center Cincinnati Ohio U.S.A.
6. Division of Pediatric Otolaryngology and Pulmonary Medicine Cincinnati Children's Hospital Medical Center Cincinnati Ohio U.S.A.