1Department of Physiology, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
2First Department of Dermatology and Venereology, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
3Sismanogleio General Hospital, Athens, Greece
4Clinical Immunology-Rheumatology, Hippokration General Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
5Joint Academic Rheumatology Program, Athens, Greece
6Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
7Fourth Department of Internal Medicine, University Hospital Attikon, National and Kapodistrian University of Athens, Athens, Greece