1. Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
2. Division of Hematology and Oncology, Department of Internal Medicine, Institute of Health Science, Gyeongsang National University Changwon Hospital, Gyeongsang National University College of Medicine, Changwon, Korea.
3. Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Neurosurgery, Uijeongbu St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea.
5. Department of Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
6. Department of Neurosurgery, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Korea.
7. Department of Neurosurgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
8. Neuro-Oncology Clinic, National Cancer Center, Goyang, Korea.
9. Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
10. Department of Neurosurgery, Yeungnam University Hospital, Yeungnam University College of Medicine, Daegu, Korea.
11. Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
12. Department of Neurosurgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
13. Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea.
14. Department of Radiation Oncology, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
15. Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
16. Department of Neurosurgery, Konkuk University Medical Center, Seoul, Korea.
17. Department of Neurosurgery, Brain Tumor Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
18. Department of Neurosurgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
19. Department of Neurosurgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
20. Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.