1 Rheumatology Department, Salford Royal NHS Foundation Trust, Salford, karinalazarewicz@yahoo.co.uk.
2 Rheumatology Department, Royal Blackburn Hospital, Blackburn and.
3 Rheumatology Department, Salford Royal NHS Foundation Trust, Salford, Centre for Musculoskeletal Research, Institute of Inflammation and Repair, University of Manchester, Manchester, UK.