1. Joint Academic Rheumatology Program, Medical School, National and Kapodistrian University of Athens, Greece.
2. Centre for Epidemiology Versus Arthritis, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
3. Rheumatology Department, 417 Army Shared Fund Hospital NIMTS, Athens, Greece.
4. Joint Academic Rheumatology Program, Medical School, National and Kapodistrian University of Athens, Greece. geofragoul@yahoo.gr, george.fragkoulis@glasgow.ac.uk