1. Department of Otolaryngology−Head and Neck Surgery, Temerty Faculty of Medicine, University 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. ICES, Toronto, Ontario, Canada
4. Division of Otolaryngology−Head and Neck Surgery, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
5. Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
6. Department of Surgical Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
7. Department of Medical Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
8. Evaluative Clinical Sciences, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
9. Ontario Health Cancer Care, Toronto, Ontario, Canada