1. Princess Margaret Cancer Centre Toronto Canada
2. St. Jude Children's Research Hospital Memphis Tennessee USA
3. GenesisCare USA Fort Myers Florida USA
4. Tom Baker Cancer Centre Calgary Canada
5. Mayo Clinic Department of Radiation Oncology Rochester Minnesota USA
6. Odette Cancer Centre Sunnybrook Health Sciences Centre Toronto Canada
7. Potentia Partners Kelburn New Zealand
8. University of California San Diego California USA
9. University of Southern California Los Angeles California USA
10. University of Colorado School of Medicine Aurora Colorado USA
11. University of Minnesota Medical Center Minneapolis Minnesota USA