1. Department of Medicine, McGill University, Montreal, Québec, Canada
2. College of Medicine, University of Saskatchewan, Regina, Saskatchewan, Canada
3. Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
4. Faculty of Medicine and Health Sciences, McGill University, Montreal, Québec, Canada
5. Department of Psychiatry, University of British Columbia, Vancouver, British Columbia, Canada
6. Department of Medicine, University of Alberta, Yellowknife, Northwest Territories, Canada