1. University of Calgary/Tom Baker Cancer Centre; Calgary Alberta Canada
2. CancerCare Manitoba; Winnipeg Manitoba Canada
3. Hôpital Dr Georges-L. Dumont; Centre d'Oncologie Dr Léon-Richard; Moncton New Brunswick Canada
4. QE II Health Sciences Centre; Diagnostic Imaging Department; Halifax Nova Scotia Canada
5. Princess Margaret Hospital; Radiation Physics Department; Toronto Ontario Canada
6. McGill University Health Centre; Medical Physics Unit; Montreal Quebec Canada