1. 3Cardiac Surgery Department, Onassis Cardiac Surgery Center, Athens, Greece
2. Division of Cardiovascular Surgery, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network and University of Toronto, Toronto, Ontario, Canada
3. lnterventional Cardiology Department, Onassis Cardiac Surgery Center
4. Department of Cardiac Surgery Intensive Care Unit, Onassis Cardiac Surgery Center, Athens, Greece