1. Department of Neurosurgery Guangzhou Women and Children's Medical Center Guangzhou China
2. Department of Anatomical and Cellular Pathology The Chinese University of Hong Kong Prince of Wales Hospital Shatin Hong Kong, China SAR
3. Department of Neurosurgery Huashan Hospital Fudan University Shanghai China
4. Department of Neurosurgery The First Affiliated Hospital of Zhengzhou University Zhengzhou China
5. Department of Pathology The First Affiliated Hospital of Zhengzhou University Zhengzhou China
6. Department of Neurosurgery The Chinese University of Hong Kong Prince of Wales Hospital Shatin Hong Kong, China SAR
7. Department of Pathology Huashan Hospital Fudan University Shanghai China