1. Department of Radiation Oncology; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
2. Department of Clinical Oncology, Royal Stoke University Hospital; University Hospital North Midlands NHS Trust; Stoke-on-Trent United Kingdom
3. Department of Radiation Physics; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
4. Department of Biostatistics; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
5. Department of Otolaryngology - Head and Neck Surgery/Surgical Oncology; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
6. Division of Medical Oncology; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada