1 Division of Rheumatology, Medical-Geriatric Department, University Hospital AOU Careggi, Florence, Italy.
2 Department of Clinical and Experimental Medicine, Morphological Madrid Research Center (MoMaRC), Madrid, Spain.
3 Division of Rheumatology and Scleroderma Unit, Department of Clinical and Experimental Medicine, University of Florence, Medical-Geriatric Department, AOU Careggi, Florence, Italy.