| Affiliation: | 1. Department of Otolaryngology–Head and Neck Surgery, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, Washington, U.S.A;2. Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, U.S.A;3. Ear and Hearing Center, Division of Pediatric Otolaryngology–Head and Neck Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, U.S.A;4. Department of Otolaryngology–Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, U.S.A |
