1. Canadian Association of Radiologists, Ottawa, ON, Canada
2. North York General Hospital, Toronto, ON, Canada
3. Ormmstown Medical Clinic, Ormstown, QC, Canada
4. Centre hospitalier de l'Université de Montréal, Montréal, QC, Canada
5. BC Cancer Research Institute, Vancouver, BC, Canada
6. QEII Health Sciences Centre, Victoria General Hospital, Halifax, NS, Canada
7. University of Waterloo, Waterloo, ON, Canada
8. Department of Emergency Medicine, University of Alberta, Edmonton, AB, Canada
9. Gordon and Leslie Diamond Health Care Centre, University of British Columbia, Vancouver, BC, Canada