1. Department of Otolaryngology–Head and Neck Surgery Hospital for Sick Children, University of Toronto Toronto Ontario Canada
2. Department of Otolaryngology–Head and Neck Surgery University of Cincinnati College of Medicine, Division of Pediatric Otolaryngology, Cincinnati Children's Hospital Medical Center Cincinnati Ohio U.S.A.
3. Department of Otolaryngology and Mayo Children's Center Mayo Clinic College of Medicine and Science Rochester Minnesota U.S.A.
4. Department of Pediatric Otolaryngology Texas Children's Hospital Houston Texas U.S.A.
5. Department of Otolaryngology Children's National Health System, Division of Otolaryngology, George Washington University Washington DC U.S.A.
6. Division of Pediatric Otolaryngology Rady Children's Hospital San Diego San Diego California U.S.A.
7. Department of Otorhinolaryngology University of Texas at Houston McGovern Medical School Houston Texas U.S.A.
8. Airway Unit Scientific Institute for Research and Healthcare, Giannina Gaslini Institute Genoa Italy
9. Department of Otolaryngology–Head and Neck Surgery, Division of Pediatric Otolaryngology University of Texas Southwestern Medical Center Dallas Texas U.S.A.
10. Pediatric Otolaryngology, British Columbia Children's Hospital University of British Columbia Vancouver British Columbia Canada
11. Department of Otolaryngology–Head and Neck Surgery Children's Hospital of the King's Daughters, Eastern Virginia Medical School Norfolk Virginia U.S.A.
12. Department of Otolaryngology Children's Hospital of Wisconsin–Milwaukee Campus, Medical College of Wisconsin Milwaukee Wisconsin U.S.A.
13. Division of Otolaryngology Dalhousie University, Izaak Walton Killam Health Centre Halifax Nova Scotia Canada
14. Department of Otolaryngology–Head and Neck Surgery Washington University School of Medicine St. Louis Missouri U.S.A.
15. Department of Pediatric Otolaryngology University of Colorado School of Medicine and Children's Hospital Colorado Aurora Colorado U.S.A.
16. Department of Otolaryngology–Head and Neck Surgery Montreal Children's Hospital, McGill University Montreal Quebec Canada
17. Department of Otolaryngology–Head and Neck Surgery Children's Hospital of Philadelphia Philadelphia Pennsylvania U.S.A.
18. Department of Otolaryngology–Head and Neck Surgery Stanford University, Lucile Salter Packard Children's Hospital Palo Alto California U.S.A.
19. Department of Otolaryngology–Head and Neck Surgery University of North Carolina at Chapel Hill Chapel Hill North Carolina U.S.A.
20. Department of Otolaryngology–Head and Neck Surgery Oregon Health and Science University, Pediatric Otolaryngology, Doernbecher Children's Hospital Portland Oregon U.S.A.
21. Department of Otolaryngology–Head and Neck Surgery Loyola University Medical Center Maywood Illinois U.S.A.
22. Department of Otolaryngology–Head and Neck Surgery Victoria Hospital, Schulich School of Medicine and Dentistry, Western University London Ontario Canada
23. Division of Otolaryngology–Head and Neck Surgery Seattle Children's Hospital Seattle Washington U.S.A.
24. Department of Otolaryngology–Head and Neck Surgery University of Michigan, Mott Children's Hospital Ann Arbor Michigan U.S.A.
25. Arizona Otolaryngology Consultants Phoenix Arizona U.S.A.
26. Department of Pediatric Otolaryngology Sydney Children's Hospital Randwick New South Wales Australia
27. Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia Philadelphia Pennsylvania
28. Department of Anesthesiology and Critical Care University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania U.S.A.
29. Division of Pediatric Otolaryngology Ann and Robert H. Lurie Children's Hospital of Chicago Chicago Illinois U.S.A.
30. Department of Otolaryngology and Communication Enhancement Boston Children's Hospital Boston Massachusetts U.S.A.
31. Divisions of Pediatric Surgery and Otolaryngology–Head and Neck Surgery, Departments of Surgery and Pediatrics The Stollery Children's Hospital, University of Alberta Hospital Edmonton Alberta Canada
32. Division of Pediatric Otolaryngology Nemours/Alfred I. duPont Hospital for Children Wilmington Delaware U.S.A.
33. Department of Otolaryngology–Head and Neck Surgery Medical University of South Carolina Charleston South Carolina U.S.A.
34. Department of Otolaryngology–Head and Neck Surgery Vanderbilt University Medical Center Nashville Tennessee U.S.A.
35. Division of Otolaryngology, Department of Surgery Children's Hospital of Eastern Ontario, University of Ottawa Ottawa Ontario Canada
36. Division of Pediatric Otolaryngology Arkansas Children's Hospital Little Rock Arkansas U.S.A.
37. Department of Otolaryngology–Head and Neck Surgery Perth Children's Hospital, University of Western Australia Nedlands Western Australia Australia
38. Division of Otolaryngology–Head and Neck Surgery University of Utah School of Medicine Salt Lake City Utah U.S.A.
39. Department of Otolaryngology Massachusetts Eye and Ear Infirmary, Harvard Medical School Boston Massachusetts U.S.A.
40. Department of Pediatric Otolaryngology Phoenix Children's Hospital Phoenix Arizona U.S.A.