1. Rheumatology Unit, San Giovanni di Dio Hospital, USL Tuscany Centre, Florence, Italy. bandin@hotmail.it, francesca.bandi@gmail.com
2. Rheumatology Unit, San Giovanni di Dio Hospital, USL Tuscany Centre, Florence, Italy.
3. Rheumatology Unit, Università Politecnica delle Marche, Jesi, Ancona, Italy.
4. Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, University of Florence, Italy.
5. Immunology and Allergology Laboratory, San Giovanni di Dio Hospital, USL Tuscany Centre, Florence, Italy.