1. National Trauma Research Institute (NTRI), Melbourne, Victoria, Australia.
2. Department of Neurosurgery, Alfred Health, Melbourne, Victoria, Australia.
3. Trauma Services, Alfred Health, Melbourne, Victoria, Australia.
4. Aged Care Services, Alfred Health, Melbourne, Victoria, Australia.
5. Medical Services, Alfred Health, Melbourne, Victoria, Australia.
6. Intensive Care Unit, Alfred Health, Melbourne, Victoria, Australia.
7. Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Victoria, Australia.
8. Department of Surgery, Monash University, Melbourne, Victoria, Australia.
9. Department of Surgery, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.