1. Division of Pediatric Otolaryngology‐Head and Neck Surgery Children's Minnesota Minneapolis Minnesota USA
2. Department of Otolaryngology‐Head and Neck Surgery University of Minnesota Minneapolis Minnesota USA
3. Department of Otolaryngology‐Head and Neck Surgery University of Cincinnati College of Medicine Cincinnati Ohio USA
4. Department of Otolaryngology‐Head and Neck Surgery University of Texas‐Southwestern Dallas Texas USA
5. Division of Pediatric Otolaryngology‐Head and Neck Surgery Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA
6. Division of Biostatistics and Epidemiology Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA
7. Division of Pediatric Otolaryngology Vanderbilt University Medical Center Nashville Tennessee USA
8. Aerodigestive and Esophageal Center Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA