1. Department of Cardiovascular Surgery, Kosuyolu Education and Research Hospital , Istanbul, Turkey
2. Department of Cardiothoracic Surgery, University of Thessaly , Larissa, Greece
3. Department of Cardiothoracic Surgery, Erasmus University Medical Center , Rotterdam, Netherlands
4. Department of Cardiac Surgery and Cardiovascular Research, Dedinje Cardiovascular Institute , Belgrade, Serbia
5. Department of Cardiac Surgery, Queen Elizabeth University Hospital , Birmingham, UK
6. Michigan Society of Thoracic and Cardiovascular Surgeons Quality Collaborative , Ann Arbor, MI, USA
7. Department of Cardiac Surgery, University of Michigan , Ann Arbor, MI, USA
8. Department of Cardiothoracic Surgery, Saint Joseph Mercy Ann Arbor , Ann Arbor, MI, USA