1 2(nd) Cardiology Department, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece. Electronic address: [email protected].
2 Hygeia Group-network, Marousi, Athens, Greece.
3 2(nd) Cardiology Department, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece.
4 2nd Cardiology Department, Korgialenio-Benakio Red Cross Hospital, Athens, Greece.
5 1st Department of Cardiology, Echocardiography Laboratory, General Hospital of Nikea, Piraeus, Greece.