Affiliation: | 1. Division of Rheumatology, Department of Biotechnological and Applied Clinical Science, School of Medicine, University of L''Aquila, L''Aquila, Italy;2. Division of Rheumatology, Department of Internal Medicine, University of Palermo, Palermo, Italy.;3. Pathology, Ospedali Riuniti Villa Sofia-Cervello, Palermo, Italy |