| Institution: | 1. Department of Otolaryngology–Head and Neck Surgery, University Health Network, Toronto, Ontario, Canada;2. Sidney Head and Neck Cancer Institute, Chris O'Brien Lifehouse, Sydney, Australia;3. Department of Otorhinolaryngology–Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland;4. Department of Statistics, Princess Margaret Cancer Center, Toronto, Ontario, Canada;5. Division of Thoracic Surgery, Department of Surgery, University Health Network, Toronto, Ontario, Canada |
