1. Rheumatology and Clinical Immunology, Spedali Civili and University of Brescia, Italy,
2. Rheumatology and Clinical Immunology, Spedali Civili and University of Brescia, Italy
3. Division of Rheumatology, Ist. Gaetano Pini, Department of Internal Medicine, University of Milan, IRCCS Istituto Auxologico Italiano, Italy