Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia; Burns Trauma and Critical Care Research Centre, University of Queensland, QLD, Australia. Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia; Burns Trauma and Critical Care Research Centre, University of Queensland, QLD, Australia. Electronic address: r.boots@uq.edu.au. Prince of Wales Hospital, Chinese University of Hong Kong, Sha Tin, Hong Kong. Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia; Burns Trauma and Critical Care Research Centre, University of Queensland, QLD, Australia; Heart Foundation Research Centre, Griffith University. Intensive Care Unit. Royal Darwin Hospital, NT, Australia. Department of Intensive Care and Hyperbaric Medicine, The Alfred, Prahran, Victoria, Australia. Intensive Care Unit. Logan Hospital, Queensland, Australia.