1. IIMPACT in Health, University of South Australia, Adelaide, South Australia, Australia
2. Centre for Pain IMPACT, Neuroscience Research Australia, Sydney, New South Wales, Australia
3. School of Health and Medical Sciences, University of New South Wales, Sydney, New South Wales, Australia
4. Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia
5. Northern Adelaide Local Health Network, Adelaide, South Australia, Australia
6. Department of General Practice, Erasmus University/Rotterdam, Rotterdam, Netherlands
7. Bruyere Research Institute, University of Ottawa, Ottawa, Canada
8. Department of Medicine and School of Epidemiology, University of Ottawa, Ottawa, Canada