1 Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza and "Madonna delle Grazie" Hospital of Matera, Potenza, Italy.
2 Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy.
3 Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza and "Madonna delle Grazie" Hospital of Matera, Potenza, Italy. saldangelo@katamail.com.
4 Basilicata Ricerca Biomedica (BRB) Foundation, Potenza, Italy.