1. Department of Neurosurgery, International St. Mary's Hospital, Incheon, Korea.
2. Department of Medicine, Graduate School, Yonsei University, Seoul, Korea.
3. Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.
4. Brain Tumor Center, Yonsei University College of Medicine, Seoul, Korea.
5. Brain Research Institute, Yonsei University College of Medicine, Seoul, Korea.
6. Department of Radiology, Yonsei University College of Medicine, Seoul, Korea.