1. Department of Neurosurgery, Marmara University, and Laboratory of Molecular Neurosurgery, Institute of Neurological Sciences, Istanbul, Turkey
2. Department of Pathology, Marmara University, Istanbul, Turkey
3. Marmara University, Laboratory of Molecular Neurosurgery, Institute of Neurological Sciences, Istanbul, Turkey
4. Department of Neurosurgery, Marmara University, Istanbul, Turkey
5. Department of Neurosurgery, Yale University, New Haven, Connecticut