1. Department of Anesthesiology and Critical Care, Université Laval, Quebec, Quebec, Canada
2. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada3Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
3. Centre for Innovation, Canadian Blood Services, Edmonton, Alberta
4. Department of Medicine, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
5. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada