aThe George Institute for Global Health, Sydney, NSW, Australia
bFaculty of Medicine, University of New South Wales, Sydney, NSW, Australia
cRoyal Brisbane and Women's Hospital, Brisbane, QLD, Australia
dUniversity of Queensland, Brisbane, QLD, Australia
eDepartment of Anaesthesiology, Critical Care and Emergency Medicine, CHU Nîmes, University Montpellier, Nîmes, France
fImperial College Healthcare NHS Trust, London, United Kingdom
gDepartment of Surgery and Cancer, Imperial College London, London, United Kingdom
hDepartment of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
iGlobal and Tropical Health Division, Menzies School of Health Research, Darwin, NT, Australia
jDepartment of Infectious Diseases, John Hunter Hospital, Newcastle, NSW, Australia
kMalcolm Fisher Department of Intensive Care, Royal North Shore Hospital, St Leonards, NSW, Australia
lSchool of Public Health, Imperial College London, London, United Kingdom
mAuckland City Hospital, Auckland, New Zealand
nQueen Elizabeth Hospital, Adelaide, SA, Australia
oSchool of Medicine, University of Adelaide, Adelaide, SA, Australia
pSchool of Epidemiology and Preventive Medicine, Monash University, Melbourne, VIC, Australia
qSt George's University Hospitals NHS Foundation Trust, London, United Kingdom
rSt George's University of London, London, United Kingdom
sBlacktown Hospital, Sydney, NSW, Australia
tRedcliffe Hospital, Brisbane, QLD, Australia
∗Corresponding author at. Statistics Division, The George Institute for Global Health, Australia. Tel.: +6 1 2 8052 4581 lbillot@georgeinstitute.org