[1] China Med Univ, Shengjing Hosp, Dept Neurosurg, Shenyang 110004, Peoples R China
[2] Liaoning Clin Med Res Ctr Nervous Syst Dis, Shenyang 110004, Peoples R China
[3] Key Lab Neurooncol Liaoning Prov, Shenyang 110004, Peoples R China
[4] China Med Univ, Hosp 1, Dept Geriatr, Shenyang 110001, Peoples R China
[5] China Med Univ, Coll Basic Med, Dept Neurobiol, Shenyang 110122, Peoples R China