1. Department of Neuro‐Oncology Guangdong Sanjiu Brain Hospital Guangzhou 510515 China
2. Department of Pathology Guangdong Sanjiu Brain Hospital Guangzhou 510515 China
3. Department of Pathology Sun Yat‐Sen University Cancer Center Guangzhou 510060 China
4. Department of Pathology Guangzhou Women and Children Medical Center Guangzhou 510620 China
5. State Key Laboratory of Translational Medicine and Innovative Drug Development Jiangsu Simcere Diagnostics Co., Ltd. Nanjing 210042 China
6. Department of Medicine Nanjing Simcere Medical Laboratory Science Co., Ltd. Nanjing 210042 China
7. Department of Pathology Guangdong Provincial People's Hospital Guangzhou 510080 China