[1] Department of Emergency Medicine, The Ottawa Hospital, Civic Campus, 1053 Carling Avenue, E-Main, Room EM-206, Box 227, Ottawa, K1Y 4E9, ON
[2] Division of Cardiac Anesthesiology, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, K1Y 4W7, ON
[3] Clinical Epidemiology Program, Ottawa Hospital Research Institute, 1053 Carling Avenue, Room F6-58, Ottawa, K1Y 4E9, ON
[4] Department of Psychology, Carleton University, Loeb B550, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON
[5] Department of Emergency Medicine, University of Ottawa, 1053 Carling Avenue, E-Main, Room EM-206, Box 227, Ottawa, K1Y 4E9, ON