1. Department of Cardiac Surgery, Central Clinical Hospital of the Ministry of Interior, Centre of Postgraduate Medical Education, Warsaw, Poland
2. Cardiothoracic Research Centre, Innovative Medical Forum, Bydgoszcz, Poland
3. Cardio-Thoracic Surgery Department, Heart and Vascular Centre, Maastricht University Medical Centre, Maastricht, Netherlands
4. Department and Clinic of Cardiac Surgery, Wroclaw Medical University, Wroclaw, Poland
5. Division of Cardiac Surgery, Heart and Lung Transplantation and Mechanical Circulatory Support, Silesian Center for Heart Disease, Zabrze, Poland
6. Clinical Department of Cardiac Surgery, District Hospital no. 2, University of Rzeszów, Rzeszów, Poland
7. Department of Cardiac Surgery, Pomeranian Medical University, Szczecin, Poland
8. Department of Cardiac Surgery, 4 Military Clinical Hospital Centre for Heart Diseases, Wroclaw, Poland
9. Department of Cardiovascular Surgery and Transplantology, Jagiellonian University, John Paul II Hospital, Krakow, Poland
10. Department of Cardiosurgery, Medical University of Bialystok, Bialystok, Poland
11. Department of Pathophysiology, Faculty of Pharmacy, Collegium Medicum, Nicolaus Copernicus University, Toruń, Poland
12. Department of Cardiac Surgery, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
13. Department of Cardiac Surgery, Upper-Silesian Heart Center, Katowice, Poland
14. Department of Pediatric Cardiothoracic Surgery, The Children's Memorial Health Institute, Warsaw, Poland