1. Rheumatology Department; Royal Adelaide Hospital; North Tce, Adelaide South Australia SA 5000 Australia
2. Discipline of Medicine; Adelaide University; Adelaide South Australia Australia
3. PathWest Laboratory Medicine; Queen Elizabeth II Medical Centre; Perth Western Australia Australia
4. Clinical Immunology; Sir Charles Gairdner Hospital
5. West Australian Neuroscience Research Institute, Queen Elizabeth II Medical Centre; Perth Western Australia Australia
6. Rheumatology Department; The Queen Elizabeth Hospital; Adelaide South Australia Australia