title: The authors reply.
authors.affiliation: Departement of Critical Care and Research Center of Hôpital du Sacré-Coeur de Montréal, Montreal, Québec, Canada;Department of Critical Care Medicine, St. Michael's Hospital and Keenan Research Centre for Biomedical Science of the Li Ka Shing Knowledge Institute, Toronto, Ontario, Canada.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Charbonney
authors.forename: John C
authors.initials: JC
authors.lastname: Marshall