1. Department of NeurosurgeryMedical Faculty of Ataturk University25100ErzurumTurkey
2. Department of AnatomyMedical Faculty of Ataturk University25100ErzurumTurkey
3. Department of PathologyMedical Faculty of Ataturk University25100ErzurumTurkey
4. Department of PhysiologyMedical Faculty of Ataturk University25100ErzurumTurkey