1. Department of Neurosurgery, Istanbul Health Sciences University Faculty of Medicine, Istanbul, Turkey
2. Department of Neurosurgery, Medicalpark Florya Private Hospital, Istanbul, Turkey
3. Department of Physical Therapy and Rehabilitation, Baltalimani Bone Desease Training and Research Hospital, Istanbul, Turkey
4. Department of Neurosurgery, Balikesir Universty Medical Faculty Hospital, Balikesir, Turkey
5. Department of Anesthesiology, Istanbul Health Sciences University Faculty of Medicine, Istanbul, Turkey
6. Department of Neurosurgery, Izmır Health Sciences University Faculty of Medicine, Izmir, Turkey