1. Division of Rheumatology, Local Health Trust 3 , Genoa, Italy
2. Laboratory of Experimental Rheumatology and Academic Division of Clinical Rheumatology, Department of Internal Medicine, University of Genoa , Genoa, Italy
3. Department of Rheumatology, Hospital of Bruneck (ASAA-SABES), Teaching Hospital of the Paracelsius Medical University , Bruneck, Italy
4. Department of Rheumatology, Medical University Graz , Graz, Austria