1. Faculty of Medicine, Kasr Al Ainy, Cardiology Department Cairo University Cairo Egypt
2. Faculty of Medicine Alexandria University Alexandria Egypt
3. Faculty of Medicine Ain Shams University Cairo Egypt
4. Faculty of Medicine Assiut University Asyut Egypt
5. Faculty of Medicine Menoufia University Shibin Al Kawm Egypt
6. Faculty of Medicine Suiz Canal University Ismailia Egypt
7. Faculty of Medicine Al Azhar University Cairo Egypt
8. Armed Forces College of Medicine, Cardiology Department Cairo Egypt
9. Faculty of Medicine Tanta University Tanta Egypt
10. Faculty of Medicine Helwan University Helwan Egypt
11. Faculty of Medicine Aswan University Aswan Egypt
12. Cardiology Unit Research Institute of Ophthalmology Cairo Egypt