1. Department of Radiation Oncology Princess Margaret Cancer Center/University of Toronto Toronto Ontario Canada
2. Department of Otolaryngology‐Head and Neck Surgery and Surgical Oncology Princess Margaret Cancer Center/University of Toronto Toronto Ontario Canada
3. Department of Biostatistics Princess Margaret Cancer Center/University of Toronto Toronto Ontario Canada
4. Division of Medical Oncology Princess Margaret Cancer Center/University of Toronto Toronto Ontario Canada
5. Department of Neuroradiology and Head and Neck Imaging Princess Margaret Cancer Center/University of Toronto Toronto Ontario Canada
6. Department of Pathology Princess Margaret Cancer Center/University of Toronto Toronto Ontario Canada