Department of Neurosurgery;
First Clinical Hospital;
Harbin Medical University;
Harbin 150001;
Heilongjiang Province;
China;
Department of Microbiology;
Harbin Medical University;
Harbin 150001;
Heilongjiang Province;
China;
Department of Pharmacology;
Harbin Medical University;
Harbin 150001;
Heilongjiang Province;
Chnia;