1. 3rd Department of Cardiothoracic Surgery; Onassis Cardiac Surgery Center; Athens Greece
2. 2nd Department of Cardiothoracic Surgery; Onassis Cardiac Surgery Center; Athens Greece
3. 1st Department of Cardiothoracic Surgery; Onassis Cardiac Surgery Center; Athens Greece
4. Department of Anaesthesiology; Onassis Cardiac Surgery Center; Athens Greece
5. Intensive Care Unit, Onassis Cardiac Surgery Center; Athens Greece
6. Department of Haematology/Blood Transfusion; Onassis Cardiac Surgery Center; Athens Greece
7. Department of Oncology, School of Medicine; University of Sheffield; Sheffield United Kingdom