[1] Univ Florence, Dept Expt & Clin Med, Florence, Italy
[2] Univ Turin, Dept Clin & Biol Sci, Turin, Italy
[3] Careggi Univ Hosp, Interdisciplinary Internal Med Unit, Florence, Italy
[4] Univ Trieste, Dept Med Surg & Hlth Sci, Trieste, Italy
[5] Cattinara Univ Hosp, Clin Med & Rheumatol Unit, Trieste, Italy
[6] Monash Univ, Dept Med, Ctr Inflammatory Dis, Monash Med Ctr, Melbourne, Australia