1. Department of Otolaryngology–Head & Neck Surgery, Princess Margaret Cancer Centre University Health NetworkUniversity of Toronto Toronto Ontario Canada
2. Institute of Health Policy, Management and Evaluation Dalla Lana School of Public Health University of Toronto Toronto Ontario Canada
3. Division of Otolaryngology–Head & Neck Surgery Dalhousie University Halifax Nova Scotia Canada
4. Department of Neuroradiology and Head and Neck Imaging Princess Margaret Cancer Centre University Health NetworkUniversity of Toronto Toronto Ontario Canada
5. University of Pittsburgh and UPMC Hillman Cancer Center Pittsburgh Pennsylvania
6. Department of Radiation Oncology Princess Margaret Cancer Centre University Health NetworkUniversity of Toronto Toronto Ontario Canada