1. Department of Cardiothoracic Surgery Research Lankenau Institute for Medical Research Wynnewood Pennsylvania USA
2. Department of Cardiothoracic Surgery, Lankenau Medical Center, Lankenau Heart Institute Main Line Health Wynnewood Pennsylvania USA
3. Department of Cardiac Surgery, Mother Teresa Hospital University of Tirana Tirana Albania
4. Department of Adult Cardiac Surgery, G. Pasquinucci Heart Hospital Fondazione CNR‐G. Monasterio Massa Italy
5. Department of Experimental and Clinical Medicine, Cardiac Surgery Unit University of Florence Firenze Italy
6. Department of Cardiac Surgery/Cardiology University of Siena Siena Italy
7. Department of Cardiac Surgery, Appalachian Regional Health University of Kentucky Hazard Kentucky USA
8. Department of Surgery, Section of Cardiac Surgery, Max Rady College of Medicine University of Manitoba Winnipeg Manitoba Canada
9. 2010 Vision Associates Toronto Ontario Canada
10. Department of Cardiac Surgery CARIM Maastricht Medical University Maastricht Netherlands