1. Department of Neurosurgery, Wuhan General Hospital of PLA, Southern Medical University, Wuhan, Hubei 430070, P.R. China
2. The Central Laboratory, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518035, P.R. China
3. Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen, Guangdong 518055, P.R. China