1. Musculoskeletal Research Group Institute of Cellular Medicine Newcastle University U.K.
2. Rheumatology Research Group School of Immunity and Infection University of Birmingham U.K.
3. Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE) U.K.
4. Department of Rheumatology Leiden University The Netherlands
5. Institute of Infectious Diseases and Immunology Utrecht University The Netherlands