1. Department of Neurosurgery, Hannover Medical School, Hannover, Germany
2. Department of Neurosurgery, Klinikum Dessau, Dessau-Rosslau, Germany,
3. House Officer, Faculty of Medicine, Assiut University, Assiut, Egypt,
4. Department of Medicine, University of Kufa, Najaf, Iraq,
5. Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon,
6. Department of Neurosurgery, Sapienza University of Rome, Rome, Italy,
7. Faculty of Medicine, Mohammed V University, Rabat, Morocco,
8. Department of Psychiatry, University of Birmingham, Birmingham, United Kingdom,
9. Department of Neurosurgery, Institute of Medical Sciences and SUM Hospital, Bhubaneswar, Odisha, India
10. Department of Neurosurgery, Trivandrum Medical College, Trivandrum, Kerala, India,
11. Department of Neurosurgery, Imperial College Healthcare National Health Services Trust, Charing Cross Hospital, London, United Kingdom.