1. Department of Otolaryngology; University of Colorado School of Medicine and Children's Hospital Colorado; Aurora Colorado
2. Department of Otolaryngology-Head and Neck Surgery; University of Washington and Seattle Children's Hospital; Seattle Washington
3. Divisions of Pediatric Otolaryngology-Head and Neck Surgery and Pulmonary Medicine; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
4. Department of Otolaryngology-Head and Neck Surgery; University of Cincinnati College of Medicine; Cincinnati Ohio
5. Divisions of Otolaryngology-Head and Neck Surgery and Pediatric Surgery, Departments of Surgery and Pediatrics; University of Alberta; Edmonton Canada
6. Department of Otolaryngology-Head and Neck Surgery; University of Texas Southwestern Medical Center, Division of Pediatric Otolaryngology, Children's Medical Center; Dallas Texas
7. Department of Otolaryngology; Vanderbilt University Medical Center; Nashville Tennessee
8. Division of Pediatric Otolaryngology; Lucile Packard Children's Hospital; Stanford University School of Medicine; Stanford California
9. Department of Otolaryngology-Head and Neck Surgery; University of California, San Francisco, San Francisco, CA, USA; Division of Pediatric Otolaryngology, Head and Neck Surgery, University of California; San Francisco California