1. Deptartment of Rheumatology, University Hospital Coventry and Warwickshire NHS Trust, Coventry, UK
2. Department of Rheumatology Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK
3. Department of Clinical Physics and Bioengineering, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
4. Department of Ophthalmology, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
5. Department of Rheumatology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK