1 Department of Pathology and Molecular Medicine (Callum), Kingston Health Sciences Centre and Queen's University; Department of Emergency Medicine and Division of Trauma (Evans), Kingston Health Sciences Centre, Kingston, Ont.; Department of Medicine, McGill University and the McGill University Health Center (Barkun), Montréal, Que.; Department of Anesthesia and Pain Management (Karkouti), Toronto General Hospital and the University of Toronto, Toronto, Ont. jeannie.callum@kingstonhsc.ca.
2 Department of Pathology and Molecular Medicine (Callum), Kingston Health Sciences Centre and Queen's University; Department of Emergency Medicine and Division of Trauma (Evans), Kingston Health Sciences Centre, Kingston, Ont.; Department of Medicine, McGill University and the McGill University Health Center (Barkun), Montréal, Que.; Department of Anesthesia and Pain Management (Karkouti), Toronto General Hospital and the University of Toronto, Toronto, Ont.