1 Department of Clinical and Community Science (DISCCO), University of Milan and Department of Rheumatology and Medical Science, ASST Pini-COT, Milan - Italy.
2 Market Access Provider, Milan - Italy.
3 Rheumatology Clinic, "Carlo Urbani" Hospital, Department of Clinical and Molecular Science, Università Politecnica delle Marche, Jesi (AN) - Italy.