1. National and Kapodistrian University of Athens; Medical School, MSc “Cardiopulmonary Resuscitation,”; Athens Greece
2. Department of Cardiology; General Hospital of Nikea; Piraeus Greece
3. Department of Cardiology; Evangelismos General Hospital of Athens; Athens Greece
4. Intensive Care Unit; KAT Hospital; Athens Greece
5. European University Cyprus; School of Medicine; Nicosia Cyprus