1. John Hunter Hospital, Department of Cardiovascular Medicine, Hunter New England Local Health District, Newcastle, New South Wales, Australia
2. School of Nursing and Midwifery, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
3. School of Medicine and Public Health, College of Health, Medicine and Wellbeing University of Newcastle, Callaghan, New South Wales, Australia
4. Hunter Medical Research Institute, New Lambton, New South Wales, Australia
5. John Hunter Hospital, Department of Emergency Medicine, Hunter New England Local Health District Newcastle, New South Wales, Australia
6. Liverpool Hospital, South Western Sydney Local Health District, Liverpool, New South Wales, Australia
7. South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
8. Tamworth Rural Referral Hospital, Hunter New England Local Health District Tamworth, New South Wales, Australia
9. Population Health, Hunter New England Health Local Health District, Newcastle, New South Wales, Australia