1. Department of Cardiovascular Surgery & Transplantology, Jagiellonian University Medical College, Institute of Cardiology, John Paul II Hospital, Krakow, Poland
2. Department of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
3. Department of Cardiovascular Surgery, Marcus Valve Center, Piedmont Heart Institute, Atlanta, GA, USA
4. Edwards Lifesciences, Irvine, CA, USA
5. Health Finance & Access Initiative, Ardmore, PA, USA