1 Department of Experimental and Clinical Medicine, University of Florence, and Division of Internal Medicine AOUC, Florence, Italy. Electronic address: giulia.bandini@unifi.it.
2 Department of Internal Medicine, Centre of Research and Learning in Ultrasound, Maggiore Hospital, Bologna, Italy.
3 Department of Experimental and Clinical Medicine, University of Florence and Division of Rheumatology AOUC, Florence, Italy.
4 Department of Experimental and Clinical Medicine, University of Florence and Division of Rheumatology AOUC, Florence, Italy; Unit of Immunology, Rheumatology, Allergy and Rare diseases (unIRAR), IRCCS San Raffaele Hospital, Milan, Italy.
5 Department of Experimental and Clinical Medicine, University of Florence, and Division of Internal Medicine AOUC, Florence, Italy.