1. First Cardiology Department School of Medicine Hippokration General Hospital National and Kapodistrian University of Athens Athens Greece
2. Cardiology, Cardiothoracic Department, University Hospital "Santa Maria della Misericordia" Udine Italy
3. Department of Cardiology Hippokration General Hospital Athens Greece
4. Second Department of Medicine and Laboratory Clinical Immunology‐Rheumatology Unit School of Medicine Hippokration General Hospital National and Kapodistrian University Athens Greece