QUAN Wei1,2,LI Tie-lin1,CHEN Guang-zhong1,JIANG Xiao-dan1,XU Ru-xiang1,KE Yi-quan1,DUAN Chuan-zhi1,L Jian-ping2,ZHANG Hao2,XIE Wei2,ZHONG Wen-jun2,CHEN Ying-dong2,CHEN Fan-fan21Department of Neurosurgery,Zhujiang Hospital,Southern Medical University,Guangzhou 510282,China;2Department of Neurosurgery,First Municipal People’s Hospital of Guangzhou,Guangzhou 510180,China