1 Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy. nicola.latronico@unibs.it.
2 Department of Anesthesia, Critical Care and Emergency, Spedali Civili University Hospital, Brescia, Italy. nicola.latronico@unibs.it.
3 University Health Network and Toronto General Research Institute, Toronto, ON, Canada.
4 Interdepartmental Division of Critical Care, Institute of Medical Sciences, Toronto, ON, Canada.
5 Department of Medicine, University of Toronto, Toronto, ON, Canada.