1. Department of Cardiothoracic Surgery Lankenau Heart Institute, Lankenau Medical Center, Main Line Health Wynnewood Pennsylvania USA
2. Department of Cardiothoracic Surgery Research Lankenau Institute for Medical Research Wynnewood Pennsylvania USA
3. Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute Cumming School of Medicine, University of Calgary Calgary Alberta Canada
4. Faculty of Medicine, Ain Shams University Cairo Egypt
5. Department of Cardiovascular Sciences KU Leuven Leuven Belgium
6. Helen B. Taussig Heart Center The Johns Hopkins Hospital and School of Medicine Baltimore Maryland USA
7. Philadelphia College of Osteopathic Medicine Bala Cynwyd Pennsylvania USA
8. Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen University Hospital of Essen, University Duisburg‐Essen Essen Germany