1. Department of Neurosurgery, Beijing Electric Hospital, State Grid, Beijing 100073, China
2. Department of Neurosurgery, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei 430015, China
3. Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
4. Department of Hematology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
5. Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
6. Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA