1 Department of Cardiology, University Hospital of Heraklion, School of Medicine, University of Crete, 71110 Voutes, Heraklion, Crete, Greece. Electronic address: esimant@hotmail.com.
2 Department of Cardiology, University Hospital of Heraklion, School of Medicine, University of Crete, 71110 Voutes, Heraklion, Crete, Greece.