Global citimpact: 3.64 Researcher at Discipline of Emergency Medicine (M516), The University of Western , 35 Stirling Highway, Crawley 6009, Western , , 2. School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, . , 3. Centre for Nursing Research, Innovation & Quality, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Western , , 4. St John Ambulance (Western ), Belmont, Western , .