1. Interdisciplinary Department of Medicine, University of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
2. Research Center of Systemic Autoimmune and Autoinflammatory Diseases, University of Siena, Viale Bracci 1, 53100 Siena, Italy
3. Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56126 Pisa, Italy