1 Interdepartmental Division of Critical Care Medicine and.
2 Division of Respirology, Department of Medicine, University Health Network, Toronto, Ontario, Canada.
3 Department of Anesthesiology, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
4 Adult Intensive Care Unit, Centro de Educación Médica e Investigaciones Clínicas "Norberto Quirno" (CEMIC), Buenos Aires, Argentina.
5 Department of Physiology, University of Toronto, Toronto, Ontario, Canada.
6 Toronto General Hospital Research Institute, Toronto, Ontario, Canada.