1. London Health Sciences Centre, London, Ontario, Canada
2. BC Cancer, Centre for the North, Prince George, British Columbia, Canada
3. Beatson West of Scotland Cancer Centre, Glasgow, Scotland
4. Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
5. Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
6. Nova Scotia Cancer Centre, Halifax, Nova Scotia, Canada
7. BC Cancer, Surrey Centre, Surrey, British Columbia, Canada
8. Alfred Health Radiation Oncology, Melbourne, Victoria, Australia
9. Juravinski Cancer Centre, Hamilton, Ontario, Canada
10. McGill University Health Centre, Montreal, Quebec, Canada
11. BC Cancer, Vancouver Centre, Vancouver, British Columbia, Canada