[1] San Carlo Hosp, Rheumatol Inst Lucania IReL, Potenza, Italy
[2] Univ Leeds, LIRMM, Leeds, W Yorkshire, England
[3] San Carlo Hosp, IReL, Potenza, Italy
[4] San Giovanni Dio & Ruggi dAragona Univ Hosp, Dept Radiol, Salerno, Italy
[5] Leeds Teaching Hosp NHS Trust, NIHR LBRC, Leeds, W Yorkshire, England