1 Centre de Recherche (Hébert), Centre Hospitalier de L'Université de Montréal, Montréal, Que.; Département de Médecine (Hébert), Université de Montréal, Montréal, Que.; Clinical Epidemiology Program (Fergusson), Ottawa Hospital Research Institute, Ottawa, Ont.; Department of Medicine (Fergusson, Hutton, Mazer), University of Ottawa, Ottawa, Ont.; Department of Anesthesia (Fremes), Keenan Center/Li Ka Shing Institute, St. Michael's Hospital, University of Toronto, Toronto, Ont.; Sunnybrook Health Sciences Centre, Department of Surgery (Blajchman), Division of Cardiac and Vascular Surgery, University of Toronto, Toronto, Ont.; Department of Pathology and Molecular Medicine (MacAdams), McMaster University, Hamilton, Ont.; Libin Cardiovascular Institute (Wells), University of Calgary, Calgary, Alta.; University of Ottawa Heart Institute (Robblee), Ottawa, Ont.; Hôpital Laval (Bussières), Institut Universitaire de Cardiologie et Pneumologie de l'Université Laval, Laval, Que.; Hamilton Health Science Centre (Teoh), McMaster University, Hamilton, Ont.
2 Centre de Recherche (Hébert), Centre Hospitalier de L'Université de Montréal, Montréal, Que.; Département de Médecine (Hébert), Université de Montréal, Montréal, Que.; Clinical Epidemiology Program (Fergusson), Ottawa Hospital Research Institute, Ottawa, Ont.; Department of Medicine (Fergusson, Hutton, Mazer), University of Ottawa, Ottawa, Ont.; Department of Anesthesia (Fremes), Keenan Center/Li Ka Shing Institute, St. Michael's Hospital, University of Toronto, Toronto, Ont.; Sunnybrook Health Sciences Centre, Department of Surgery (Blajchman), Division of Cardiac and Vascular Surgery, University of Toronto, Toronto, Ont.; Department of Pathology and Molecular Medicine (MacAdams), McMaster University, Hamilton, Ont.; Libin Cardiovascular Institute (Wells), University of Calgary, Calgary, Alta.; University of Ottawa Heart Institute (Robblee), Ottawa, Ont.; Hôpital Laval (Bussières), Institut Universitaire de Cardiologie et Pneumologie de l'Université Laval, Laval, Que.; Hamilton Health Science Centre (Teoh), McMaster University, Hamilton, Ont. [email protected].