1 Second Propedeutic Department of Internal Medicine, General Hospital "Hippokration", Aristotle University of Thessaloniki, Konstantinoupoleos 49, 54642, Thessaloníki, Greece. [email protected].
2 Third Department of Cardiology, General Hospital "Hippokration", Aristotle University of Thessaloniki, Thessaloníki, Greece.
3 Second Propedeutic Department of Internal Medicine, General Hospital "Hippokration", Aristotle University of Thessaloniki, Konstantinoupoleos 49, 54642, Thessaloníki, Greece.
4 Veterans Affairs Medical Center, George Washington University, Washington, DC, USA.