1. Department of Neurosurgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
2. Neuroscience Institute, Heilongjiang Academy of Medical Sciences, Harbin 150086, China
3. Chinese Glioma Cooperative Group (CGCG), Beijing 100050, China
4. Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, China
5. Department of Neurology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
6. Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China