1. South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
2. Centre for Traumatic Stress Studies, University of Adelaide, Adelaide, South Australia, Australia
3. Data Management and Analysis Centre, University of Adelaide, Adelaide, South Australia, Australia
4. Department of Veterans’ Affairs, Canberra, Australian Capital Territory, Australia
5. College of Medicine, Biology and Environment, Australian National University, Canberra, Australia Capital Territory, Australia