1. Department of Neurosurgery, Medical School, Inonu University, Malatya, Turkey
2. Department of Pharmacology, Medical School, Inonu University, Malatya, Turkey
3. Department of Histology and Embryology, Medical School, Inonu University, Malatya, Turkey
4. Department of Biochemistry, Medical School, Inonu University, Malatya, Turkey
5. Department of Anesthesiology, Medical School, Inonu University, Malatya, Turkey