1. Amasya University, Department of Neurosurgery, Amasya, Turkey

2. University of Health Sciences Turkey, Antalya Training and Research Hospital, Department of Orthopaedics and Traumatology, Antalya, Turkey

3. Başkent University Hospital, Department of Neurosurgery, Ankara, Turkey

4. ARTES Spine Center at Acıbadem Ankara Hospital, Ankara, Turkey

5. Ankara Spine Center, Ankara, Turkey