1. Department of Medicine, Hellenic Army Medical Corps, Argos Orestikon, Kastoria 52200, Greece
2. Section of Cardiovascular
Medicine, Yale New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
3. 3rd Department of Pediatrics,
Ippokrateio General Hospital of Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. 1st Department of Surgery,
Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece