1. Department of Otolaryngology–Head & Neck Surgery, University of Toronto, Toronto, Ontario, Canada
2. Department of Otolaryngology–Head & Neck Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada
3. Department of Otolaryngology–Head & Neck Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada
4. Department of Otolaryngology–Head & Neck Surgery, St Michael’s Hospital, Toronto, Ontario, Canada