1. Health Economics Research Group, Institute of Environment, Health and Societies, Department of Clinical Sciences; Brunel University London; Uxbridge UK
2. School of Physiotherapy; The University of Notre Dame Australia; Fremantle Australia
3. Pain Research, Education and Policy (PREP) Program, Department of Public Health and Community Medicine; Tufts University School of Medicine; Boston Massachusetts USA
4. University Medical Centre; Johannes Gutenberg University; Mainz Germany
5. Neuroscience Research Australia; Randwick Australia
6. The Sansom Institute for Health Research, School of Health Sciences; University of South Australia; Adelaide Australia