1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Cerrahpasa Medical School, Istanbul University-Cerrahpasa, Istanbul, Turkey
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, T.C. Demiroglu Bilim University, Istanbul, Turkey
3. Department of Radiodiagnostic, Cerrahpasa Medical School, Istanbul University-Cerrahpasa, Istanbul, Turkey
4. Department of Neurosurgery, T.C. Demiroglu Bilim University, Istanbul, Turkey
5. Department of Neurosurgery, Cerrahpasa Medical School, Istanbul University-Cerrahpasa, Istanbul, Turkey
6. Department of Pathology, Cerrahpasa Medical School, Istanbul University-Cerrahpasa, Istanbul, Turkey