1. Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, SA, Australia
2. Department of Biomedical Sciences, University of Sassari, Sassari, Italy
3. Quality Control Unit, University Hospital Sassari (AOU), Sassari, Italy
4. Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Sassari and University Hospital Sassari (AOU), Sassari, Italy