Katrina Chakradeo1, Katie Buzacott2, Muriel Soden3. 1. Department of General Medicine, Mackay Base Hospital, Mackay, Queensland, Australia School of Medicine, University of Queensland, Brisbane, Queensland, Australia. 2. Department of Anatomical Pathology, Central Laboratory Pathology Queensland, Herston, Brisbane, Queensland, Australia. 3. Department of Rheumatology, Townsville Hospital and Health Service, Townsville, Queensland, Australia.