1. Second Propedeutic Department of Internal Medicine; Hippokration University Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
2. First Cardiology Clinic; Medical School; National and Kapodistrian University of Athens; Hippokration Hospital; Athens Greece
3. Department of Cardiology; School of Medicine; Koç University; Istanbul Turkey
4. Department of Clinical and Molecular Medicine; University of Rome Sapienza; Sant'Andrea Hospital; Rome Italy
5. IRCCS Neuromed; Pozzilli Italy