1. Faculty of Medicine Alexandria University Alexandria Egypt
2. Department of Cardiovascular Perfusion State University of New York Upstate Medical University Syracuse New York USA
3. Medical Research Center Kateb University Kabul Afghanistan
4. Aswan Heart Center (Magdy Yacoub Foundation) Aswan Governorate Aswan Egypt
5. Department of Family Medicine, Faculty of Medicine Suez Canal University Ismailia Egypt
6. Department of Surgery State University of New York Upstate Medical University Syracuse New York USA