1 Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
2 Department of Rheumatology and Immunology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
3 National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre and Department of Rheumatology, University Hospitals Birmingham NHS Foundation Trust.
4 Birmingham and Midland Eye Centre, Academic Unit of Ophthalmology.
5 Department of Oral Medicine, Birmingham Dental Hospital.
6 Department of Histopathology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.