1. University of Calgary Calgary Alberta Canada
2. Cornell University, New York, New York and Hospital for Special Surgery New York New York
3. McGill University, Montreal, Quebec, Canada, and Johns Hopkins University Baltimore Maryland
4. Université Laval Quebec Quebec Canada
5. Université de Sherbrooke Sherbrooke Quebec Canada
6. University of Manitoba Winnipeg Manitoba Canada
7. University of Toronto Toronto Ontario Canada
8. Western University London Ontario Canada
9. Southlake Regional Health Center Newmarket Ontario Canada