1. Department of Neurosurgery, Medical Faculty, University of Nigde Omer Halisdemir, Nigde, Turkey
2. Division of Neurophysiology, Department of Physiology, Medical Faculty, University of Cukurova, Adana, Turkey
3. Department of Histology and Embryology, Medical Faculty, University of Cukurova, Adana, Turkey
4. Department of Neurological Surgery, Medical Faculty, University of Cukurova, Adana, Turkey