1. School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia;
2. School of Population Health, University of Auckland, Auckland, New Zealand;
3. Monash-Epworth Rehabilitation Research Centre, Monash University, Melbourne, Victoria, Australia;
4. Insurance Work and Health Group, Monash University, Melbourne, Victoria, Australia;
5. Research Centre for Injury Studies, Flinders University, Adelaide, South Australia, Australia;
6. Department of Civil, Environmental and Geomatic Engineering, University College of London, London, UK;
7. Victorian Spinal Cord Service, Austin Hospital, Heidelberg, Victoria, Australia