1. Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University
2. Department of Neurosurgery, Çankırı State Hospital
3. Department of Neurosurgery, Ankara Atatürk Research and Education Hospital
4. Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Hacettepe University
5. Department of Analytical Chemistry, Faculty of Pharmacy, Hacettepe University