1. Department of Intensive Care Medicine, University Hospital of Heraklion, Medical School University of Crete, Heraklion, Greece
2. Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
3. Keenan Research Center and Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada
4. Department of Medicine, University Health Network, Toronto, Ontario, Canada; and
5. Toronto General Hospital Research Institute, Toronto, Ontario, Canada