1. Department of Medical Biochemistry, Acibadem Univeristy, Istanbul, Turkey
2. Acibadem University Neuroscience Center – Brain Tumor Research Group, Acibadem University, Istanbul, Turkey
3. Department of Neurosurgery, Acibadem Univeristy, Istanbul, Turkey
4. Department of Pathology, School of Medicine, Acibadem University, Istanbul, Turkey