1. Department of Neurosurgery, Dharmais National Cancer Hospital, West Jakarta, Indonesia,
2. Department of Neurology, Dharmais National Cancer Hospital, West Jakarta, Indonesia,
3. Department of Anatomical Pathology, Dharmais National Cancer Hospital, West Jakarta, Indonesia,
4. Department of Neurosurgery, Universitas Padjadjaran Facultas Kedokteran, Jawa Barat, Indonesia.