1. Rheumatology Unit, University Clinic and AOU of Cagliari, Monserrato, Italy
2. Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, Australia
3. Department of Medical Sciences, Section of Rheumatology, University of Ferrara and Azienda Ospedaliero-Universitaria Sant’Anna di Cona, Ferrara, Italy
4. Rheumatology Unit, Department of Clinical and Experimental Medicine, University Hospital (AOUSS) and University of Sassari, Sassari, Italy