1. Marmara University Medical School and Marmara University Neurological Sciences Institute, Istanbul, Turkey.
2. Neurosurgeon, Department of Orthopaedic Surgery, UCSF Spine Unit, CA, USA.
3. Department of Anesthesiology, Marmara University Health Sciences Institute, Istanbul, Turkey.
4. Department of Neurosurgery, Bahçeşehir University Medical School, Istanbul, Turkey.