A Samaras1, A Kartas1, D Vasdeki1, G Dividis1, E Forozidou1, G Fotos1, E Kotsi1, E Paschou1, P Tsoukra1, I Goulas1, H Karvounis1, G Giannakoulas1, A Tzikas2. 1. First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece. 2. First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece; Interbalkan European Medical Center, Asklipiou 10, Pylaia, Thessaloniki, Greece. Electronic address: aptzikas@yahoo.com.