1. Department of Cardiac Surgery, MEDINET Heart Center Ltd, Nowa Sol, Poland
2. Department of Cardiac Surgery and Interventional Cardiology, Medical University of Zielona Gora, Zielona Gora, Poland
3. Department of Medicine and Medical Sciences, Medical University of Zielona Gora, Zielona Gora, Poland
4. Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, United Kingdom
5. Department of Cardiac Surgery, Sana-Heart Center Cottbus, Cottbus, Germany
6. Department of Cardiac Surgery, MEDINET Heart Center Ltd, Wroclaw, Poland
7. Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, Poznan, Poland