1 Western Australian Centre for Rural Health, University of Western Australia, Geraldton, Western Australia, Australia.
2 Department of Sports Medicine, Sport Ireland Institute, Dublin, Ireland.
3 Centre for Population Health Research, School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia.
4 School of Physiotherapy and Exercise Science, Faculty of Health Science, Curtin University, Perth, Western Australia, Australia.
5 Pain Management Centre, Sir Charles Gardner Hospital, Perth, Western Australia, Australia.
6 Centre for Clinical Research in Emergency Medicine, Harry Perkins Institute of Medical Research, Perth, Western Australia, Australia.
7 Emergency Department, Fiona Stanley Hospital, Murdoch, Western Australia, Australia.
8 Emergency Department, Geraldton Hospital, Geraldton, Western Australia, Australia.
9 Institute for Musculoskeletal Health, Sydney School of Public Health, Faculty ofMedicine and Health, University of Sydney, Sydney, New South Wales, Australia.