1. Department of Neurosurgery, Medical Faculty, Ataturk University, Erzurum, Turkey
2. Neurology and Neurosurgery, Psychiatry Clinic, Bakirkoy Mazhar Osman Training and Research Hospital for Psychiatry, Istanbul, Turkey
3. Department of Neurosurgery, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
4. Department of Urology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
5. Department of Pharmacy, Rize Training and Research Hospital, Rize, Turkey
6. Neurosurgery Clinic, Regional Training and Research Hospital, Erzurum, Turkey
7. Biochemistry Clinic, Regional Training and Research Hospital, Erzurum, Turkey
8. Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey