1 Department of Clinical and Experimental Medicine, Division of Internal Medicine, University of Messina, Via Consolare Valeria n°1, 98100, Messina, Italy. gbagnato@unime.it.
2 Department of Clinical and Experimental Medicine, Division of Pharmacology, University of Messina, Via Consolare Valeria n°1, 98100, Messina, Italy.
3 Department of Clinical and Experimental Medicine, Division of Rheumatology, University of Messina, Via Consolare Valeria n°1, 98100, Messina, Italy.
4 Department of Clinical and Experimental Medicine, Division of Internal Medicine, University of Messina, Via Consolare Valeria n°1, 98100, Messina, Italy.
5 Department of Internal Medicine, Division of Rheumatology, University of Louisville, Louisville, Kentucky, KY 40292, USA.