1. Medical Research Group of Egypt, Cairo, Egypt
2. Faculty of Medicine, Al-Azhar University, Cairo, Egypt
3. Faculty of Medicine, South Valley University, Qena, Egypt
4. Faculty of Medicine, Zagazig University, Zagazig, Egypt
5. Resident Physician, Egyptian Fellowship of Neurology, Nasr City Hospital for Health Insurance, Cairo, Egypt
6. College of Medicine, University of Ibadan, Ibadan, Nigeria
7. Department of Neurosurgery, National Bank Hospital, Nasr City, Egypt
8. Faculty of Medicine, Al Azhar University, New Damietta, Egypt
9. Faculty of Medicine, Aleppo University, Syria
10. Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota, USA
11. Research Department, Association of Future African Neurosurgeons, Yaounde, Cameroon
12. Neurosurgery Division, Faculty of Health Sciences, University of Bamenda, Bambili, Cameroon
13. School of Pharmacy and Biomedical Sciences, University of Portsmouth, United Kingdom
14. Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA