1. Rheumatology Department, University College London Hospitals, NHS Foundation Trust, London, United Kingdom of Great Britain and Northern Ireland
2. University College London Hospitals, NHS Foundation Trust, London, United Kingdom of Great Britain and Northern Ireland
3. Rheumatology Department, Chelsea and Westminster Hospital, NHS Foundation Trust, London, United Kingdom of Great Britain and Northern Ireland
4. Royal National Hospital For Rheumatic Diseases, Bath, United Kingdom of Great Britain and Northern Ireland
5. Centre for Rheumatology & MRC Centre for Neuromuscular Diseases, University College London, London, United Kingdom of Great Britain and Northern Ireland