1. Rheumatology and Clinical Immunology Unit, 4th Department of Internal Medicine, Attikon University Hospital, Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School
2. Laboratory of Immune Regulation and Tolerance, Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens
3. 2nd Department of Neurology, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens
4. 2nd Department of Radiology, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens
5. Department of Neurology, Athens Naval Hospital, Athens
6. Department of Rheumatology, Clinical Immunology and Allergy, University of Crete School of Medicine, Heraklion, Greece
7. Medical School, University of Cyprus, Nicosia, Cyprus
8. Department of Rheumatology, ‘Asklepieion’ General Hospital, Voula, Athens, Greece