1. Neurology Department, Faculty of Medicine Cairo University Giza Egypt
2. Neurology Department, Faculty of Medicine Assiut University Asyut Egypt
3. Neurology Department, Faculty of Medicine Mansoura University Mansoura Egypt
4. Neurology Department, Faculty of Medicine Alexandria University Alexandria Egypt
5. Neurology Department, Faculty of Medicine Ain Shams University Cairo Egypt
6. Neurology Department, Faculty of Medicine Suez Canal University Ismailia Egypt
7. Neurology Department, Faculty of Medicine Fayoum University Fayoum Egypt
8. Neurology Department, Faculty of Medicine Al‐Azhar University Cairo Egypt
9. Neurology Department, Faculty of Medicine Beni‐Suef University Beni Suef Egypt
10. Neurology Department, Faculty of Medicine Benha University Benha Egypt
11. Neurology Department, Faculty of Medicine Zagazig University Zagazig Egypt
12. Neurology Department, Faculty of Medicine Tanta University Tanta Egypt
13. Neurology Department Maadi Military Hospital Cairo Egypt
14. Neurology Department Mataria Teaching Hospital El Matareya Egypt
15. Neurosurgery Department, Faculty of Medicine Cairo University Giza Egypt
16. Neurosurgery Department, Faculty of Medicine Ain Shams University Cairo Egypt
17. Neurosurgery Department, Faculty of Medicine Zagazig University Zagazig Egypt
18. Neurosurgery Department, Faculty of Medicine Tanta University Tanta Egypt