1. 1Intensive Care Department, Cairns Hospital, Queensland, Australia
2. 2The Cairns Institute, James Cook University, Cairns, Queensland, Australia
3. 3Intensive Care Department, The Alfred Hospital, Melbourne, Australia
4. 4National Trauma Research Institute, The Alfred Hospital, Melbourne, Australia
5. 5Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
6. 6Department of Anaesthesia and Perioperative Medicine, Cairns Hospital, Queensland, Australia
7. 7Department of Surgery, Cairns Hospital, Queensland, Australia
8. 8Department of Orthopaedic Surgery, Cairns Hospital, Queensland, Australia
9. 9Department of Emergency Medicine, Cairns Hospital, Queensland, Australia