1. Departments of Neurosurgery, Dicle University School of Medicine, Diyarbakir, Turkey
2. Department of Neurosurgery, HSU Gaziyasargil Training and Research Hospital, Diyarbakir, Turkey
3. HSU Gaziyasargil Training and Research Hospital, Department of Physical Medicine and Rehabilitation, Diyarbakir, Turkey;
4. Department of Histology and Embryology, Dicle University School of Medicine, Diyarbakir, Turkey