1. 4th Department of Internal Medicine, Attikon, University Hospital, National and Kapodistrian University of Athens, Chaidari, Greece
2. Laboratory of Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
3. 4th Department of Internal Medicine, School of Medicine, Hippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. First Department of Cardiology, AHEPA University Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
5. Department of Rheumatology, University of Patras Medical School, Patras, Greece
6. Department of Rheumatology, Dudley Group NHS Foundation Trust, Russells Hall Hospital, Dudley, UK