1. School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
2. GP Synergy, Newcastle, Australia
3. Institute of Applied Health Research, University of Birmingham, Birmingham, UK
4. Nuffield Department of Medicine, University of Oxford, Oxford, UK
5. Centre for Translational Neuroscience, University of Newcastle, Callaghan, Australia
6. Department of Neurology, John Hunter Hospital, Newcastle, Australia
7. Public Health Research Program, Hunter Medical Research Institute, Newcastle, Australia
8. Discipline of General Practice and Primary Care Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Australia
9. Rural Clinical School, University of Adelaide, Adelaide, Australia
10. Eastern Victoria GP Training, Hawthorn, Australia
11. Department of General Practice, University of Melbourne, Melbourne, Australia