[1] Univ Florence, Dept Expt & Clin Med, Florence, Italy
[2] AOUC, Div Rheumatol, Florence, Italy
[3] Scleroderma Unit, Florence, Italy
[4] AOU Careggi Florence, Dept Matern & Infancy, Obstet & Gynecol, Florence, Italy
[5] Artroreuma SRL, Rheumatol Outpatient Clin Associated Natl Hlth Sy, Catania, Italy
[6] IRCCS San Raffaele Hosp, Unit Immunol Rheumatol Allergy & Rare Dis UnIRAR, Milan, Italy