1 EKKAN (Unit for the Athletes and for Hereditary Cardiovascular Diseases), 1st Department of Cardiology, Hippokration Hospital, Medical School of National and Kapodistrian University of Athens, Athens 11527, Greece.
2 Unit of Inherited and Rare Cardiovascular Diseases, Onassis Cardiac Surgery Centre, Greece.
3 Hellenic National Public Health Organization, Greece.
4 Department of Cardiology, University of Ioannina Medical School, Greece.
5 Department of Clinical Therapeutics, University of Athens, Alexandra Hospital, Athens, Greece.
6 General Hospital-Health Centre of Naxos, Naxos 84300, Greece.
7 EKKAN (Unit for the Athletes and for Hereditary Cardiovascular Diseases), 1st Department of Cardiology, Hippokration Hospital, Medical School of National and Kapodistrian University of Athens, Athens 11527, Greece. Electronic address: cvlachop@otenet.gr.