1. School of Nursing, Queensland University of Technology, Kelvin Grove, Brisbane, QLD 4059, Australia
2. Royal Perth Hospital, Perth, WA 6000, Australia
3. Emergency Department, St Vincent’s Hospital Melbourne, Melbourne, VIC 3065, Australia
4. Department of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
5. Institute for Health Research, University of Notre Dame, Fremantle, WA 6061, Australia