1 Centre de recherche du CHU de Sherbrooke and Department of Medicine, Université de Sherbrooke, 3001 12e avenue Nord, Sherbrooke, PQ, J1H 5N4, Canada. francois.lamontagne@usherbrooke.ca.
2 Department of Surgery and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada.
3 Department of Critical Care Medicine, Sunnybrook Health Sciences Centre and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada.