1. University of Health Sciences Turkey, Haseki Training and Research Hospital, Clinic of Neurosurgery, Istanbul, Turkey
2. University of Health Sciences Turkey, Ministry of Istanbul Bakirkoy Prof. Dr. Mazhar Osman Mental Health and Neurological Diseases Training and Research Hospital, Clinic of Neurosurgery, Istanbul, Turkey
3. Taksim Training and Research Hospital, Clinic of Neurosurgery, Istanbul, Turkey