1. Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
2. Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
3. Research Institute, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
4. Biostatistics Division, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
5. Department of Diagnostic Radiology, School of Medicine, Queen’s University, Kingston, Ontario, Canada
6. Cancer Rehabilitation and Survivorship Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
7. Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
8. Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada