1 Department of Clinical Science and Community Health, University of Milan, Milano, Italy; Department of Rheumatology and Medical Sciences, ASST Gaetano Pini-CTO, Milano, Italy.
2 Department of Clinical Science and Community Health, University of Milan, Milano, Italy; Rheumatology Department, IRCCS Ospedale Galeazzi-Sant'Ambrogio, Milano, Italy.
5 Rheumatology Department, IRCCS Ospedale Galeazzi-Sant'Ambrogio, Milano, Italy; Department of Biomedical and Clinical Sciences, University of Milan, Milano, Italy.
6 Rheumatology Department, IRCCS Ospedale Galeazzi-Sant'Ambrogio, Milano, Italy; Department of Biomedical and Clinical Sciences, University of Milan, Milano, Italy. Electronic address: georgios.filippou@unimi.it.