1. Rheumatology Research Group Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham Birmingham UK
2. Department of Rheumatology Sandwell & West Birmingham NHS Trust Birmingham UK
3. Department of Rheumatology University Hospital Birmingham NHS Foundation Trust Birmingham UK
4. Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, University of Birmingham, and Birmingham Dental Hospital (Birmingham Community Healthcare Trust) Birmingham UK
5. Department of Dental Public Health School of Dentistry, University of Leeds Leeds UK
6. Department of Periodontology Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London London UK