1 Department of Rheumatology, Westmead Hospital, Sydney, New South Wales, Australia.
2 Westmead Clinical School, Faculty of Medicine and Health Sciences, The University of Sydney, Sydney, New South Wales, Australia.
3 Economics and Analysis Unit, Strategic Reform and Planning Branch, New South Wales Ministry of Health, St Leonards, Sydney, New South Wales, Australia.
4 NSW Biostatistics Training Program, NSW Ministry of Health, Sydney, New South Wales, Australia.
5 Coffs Harbour Health Campus, Mid-North Coast Local Health District, Sydney, New South Wales, Australia.
6 Agency for Clinical Innovation Musculoskeletal Network, St Leonards, Sydney, New South Wales, Australia.