1. Rheumatology Unit; Department of Clinical and Experimental Medicine; University of Pisa; Pisa Italy
2. Genetic, Oncology and Clinical Medicine doctorate, University of Siena; Siena Italy
3. Department of Diagnostic and Interventional Radiology; University of Pisa; Via Roma 67 56126 Pisa Italy
4. Unit of Environmental Epidemiology, Institute of Clinical Physiology, National Council of Research; Pisa Italy
5. Immunoallergology Unit, Internal Medicine, University of Pisa; Pisa Italy