1. John Paul II Hospital, Krakow, Poland
2. Department of Cardiovascular Surgery and Transplantology, Jagiellonian University Medical College, Krakow, Poland
3. Department of Cardiac Surgery and Transplantology, Cardinal Wyszynski National Institute of Cardiology, Warsaw, Poland
4. Department of Heart Transplantation and Mechanical Circulatory Support, Centre for Heart Diseases, Wroclaw Medical University, Wroclaw, Poland