1 School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, South Australia, Australia.
2 Rheumatology Unit, The Queen Elizabeth Hospital, Central Adelaide Local Health Network, Adelaide, South Australia, Australia.
3 Rheumatology Unit, Royal Adelaide Hospital, Central Adelaide Local Health Network, Woodville South, South Australia, Australia.
4 Rheumatology Research Group, Basil Hetzel Institute for Translational Health Research, The Queen Elizabeth Hospital, Woodville South, South Australia, Australia.