1 South Australian Health and Medical Research Institute (SAHMRI), Adelaide, South Australia, Australia.
2 School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.
3 Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR), Adelaide, South Australia, Australia.
4 Clinical and Health Sciences, University of South Australia, Adelaide, South Australia, Australia.
5 South Western Sydney Clinical School and Ingham Institute for Applied Medical Research, University of New South Wales, Sydney, New South Wales, Australia.