1 Department of Emergency Medicine and the Centre for Health Evaluation & Outcome Sciences, St. Paul's Hospital and the University of British Columbia, Vancouver, British Columbia, Canada. Electronic address: Brian.Grunau@ubc.ca.
2 Department of Critical Care Medicine and Division of Cardiac Surgery, Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada.
3 Department of Internal Medicine II, Cardiovascular Medicine, First Medical School, Charles University and General University Hospital, Prague, Czech Republic.
4 Division of Cardiology and Center for Resuscitation Medicine, University of Minnesota School of Medicine, Minneapolis, Minnesota, USA.
5 Division of Cardiothoracic Surgery, Department of Surgery and Department of Emergency Medicine, University of Utah Health, Salt Lake City, Utah, USA.
6 SAMU de Paris-DAR Necker University Hospital-Assistance Public Hopitaux de Paris, Paris, France.
7 Divisions of Critical Care Medicine and Cardiac Surgery, Western University, London, Ontario, Canada.
8 Hôspital du Sacré-Cœur de Montréal and Université de Montréal, Montréal, Québec, Canada.
9 Department of Critical Care Medicine and Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.