1. Central Laboratory, Dalian Municipal Women and Children’s Medical Center (Group), Xigang, Dalian 116012, Liaoning, China
2. Department of Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun 130000, Jilin, China
3. Department of Anesthesiology, The First Hospital of Jilin University, Changchun 130000, Jilin, China
4. Georgetown University Hospital, Washington, DC 20007, USA
5. Department of Neurosurgery, China-Japan Union Hospital, Jilin University, Changchun 130031, Jilin, China