1. William Harvey Research Institute; Queen Mary University of London; London UK
2. Kennedy Institute of Rheumatology; University of Oxford; Oxford UK
3. Institute of Immunology and Immunotherapy; University of Birmingham; Birmingham UK
4. Radiology Department; Alnakheel Medical Centre; Riyadh Kingdom of Saudi Arabia
5. Centre for Rheumatology and Connective Tissue Diseases; University College London; Royal Free Hospital; London UK