1. Ottawa Civic Hospital, University of Ottawa, Ottawa, Ontario, Canada
2. Foothills Hospital, University of Calgary, Calgary, Alberta, Canada
3. University of Alberta, Edmonton, Alberta, Canada
4. Halifax Infirmary, Dalhousie University, Halifax, Nova Scotia, Canada
5. Victoria Hospital, University of Montreal, Montreal, Quebec, Canada
6. Victoria Hospital, University of Western Ontario, London, Ontario, Canada