1 Department of Experimental and Clinical Medicine, University of Florence, Section of Rheumatology, AOU Careggi, Florence, Italy. gemma.lepri@unifi.it.
2 Department of Experimental and Clinical Medicine, University of Florence, Section of Rheumatology, AOU Careggi, Florence, Italy.
3 Department of Experimental and Clinical Medicine, University of Florence, Section of Rheumatology, AOU Careggi, Florence, and Unit of Immunology, Rheumatology, Allergy and Rare Diseases (UnIRAR), IRCCS San Raffaele Scientific Institute, Milan, Italy.