1 HCor Research Institute, São Paulo, SP, Brazil. fzampieri@hcor.com.br.
2 Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK.
3 Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta and Alberta Health Services, 2-124E Clinical Sciences Building, 8440-112 St NW, Edmonton, AB, T6G2B7, Canada.