1 Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum - University of Bologna, Via Massarenti, 9, 40138 Bologna, Italy; Medicine & Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, via Giulio Cesare Pupilli, 1, 40136 Bologna, Italy. Electronic address: francesco.ursini2@unibo.it.
2 Medicine & Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, via Giulio Cesare Pupilli, 1, 40136 Bologna, Italy.
4 Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum - University of Bologna, Via Massarenti, 9, 40138 Bologna, Italy; Medicine & Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, via Giulio Cesare Pupilli, 1, 40136 Bologna, Italy.