[1] NYU, Dept Otolaryngol Head & Neck Surg, NYU Langone Hlth, Grossman Sch Med, New York, NY USA
[2] Univ Toronto, Temerty Fac Med, Dept Otolaryngol Head & Neck Surg, Toronto, ON, Canada
[3] Univ British Columbia, Dept Surg, Div Otolaryngol Head & Neck Surg, Vancouver, BC, Canada
[4] Univ Toronto, Dept Family & Community Med, Toronto, ON, Canada
[5] Dalhousie Univ, QEII Hlth Sci Ctr, Div Otolaryngol Head & Neck Surg, Dept Surg, Halifax, NS, Canada
[6] CHU Quebec, Dept Oto Rhino Laryngol & Chirurg Cerv Faciale, CHUL, Pavillon Ferdinand Vandry, Quebec City, PQ, Canada
[7] Univ Manitoba, Dept Otolaryngol Head & Neck Surg, Winnipeg, MB, Canada
[8] McGill Univ, Dept Otolaryngol Head & Neck Surg, Montreal, PQ, Canada
[9] Univ Toronto, Hosp Sick Children, Dept Pediat, Toronto, ON, Canada
[10] Western Univ, London Hlth Sci Ctr, Victoria Hosp, Dept Otolaryngol Head & Neck Surg, London, ON, Canada
[11] Univ Calgary, Dept Surg, Sect Pediat Surg & Otolaryngol Head & Neck Surg, Calgary, AB, Canada
[12] Univ Ottawa, Dept Otolaryngol Head & Neck Surg, Ottawa, ON, Canada
[13] Ottawa Hosp, Ottawa, ON, Canada