[1] Univ Politecn Marche, Carlo Urbani Hosp, Dept Clin & Mol Sci, Rheumatol Unit, I-60035 Ancona, Italy
[2] Univ Politecn Marche, Dept Clin Special & Dent Sci, I-60126 Ancona, Italy
[3] Univ Hosp Azienda Osped Univ Marche, Dept Radiol Sci, Div Radiol, I-60126 Ancona, Italy
[4] IRCCS Policlin St Orsola, Oncohematol & Emergency Radiol Unit, Dept Pediat & Adult Cardiothorac & Vasc, I-40138 Bologna, Italy
[5] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds LS2 9JT, England
[6] Natl Inst Hlth Res, Leeds Teaching Hosp NHS Trust, Leeds Biomed Res Ctr, Leeds LS9 7TF, England
[7] San Giovanni Dio Hosp, USL Tuscany Ctr, Rheumatol Dept, I-50143 Florence, Italy