Robert J Moots1, Farida Fortune2, Deva Situnayake3. 1. University of Liverpool, Aintree University Hospital, Longmoor Lance, Liverpool, UK. 2. Centre for Clinical & Diagnostic Sciences, Mary School of Medicine and Dentistry, Queen Mary University of London, Barts Health, The London Hospital, London, UK. 3. Department of Rheumatology, City Hospital, Birmingham, UK.