1. Department of Radiology, Seoul National University Hospital, Seoul, Korea.
2. Center for Nanoparticle Research, Institute for Basic Science, and School of Chemical and Biological Engineering, Seoul National University, Seoul, Korea.
3. Department of Neurosurgery and Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea.
4. Department of Internal Medicine, Cancer Research Institute, Seoul National University Hospital, Seoul, Korea.
5. Department of Pathology, Seoul National University Hospital, Seoul, Korea.
6. Department of Radiation Oncology, Cancer Research Institute, Seoul National University Hospital, Seoul, Korea.
7. Department of Neurology, Seoul National University Hospital, Seoul, Korea.