[1] Capital Med Univ, Xuanwu Hosp, Dept Neurol, Chang Chun Rd 45, Beijing, Peoples R China
[2] Beijing Inst Brain Disorders, Adv Ctr Stroke, Beijing 100053, Peoples R China
[3] Capital Med Univ, Xuanwu Hosp, Dept China Amer, Inst Neurosci, Beijing 100053, Peoples R China
[4] SUNY Buffalo, Jacobs Sch Med & Biomed Sci, Dept Neurosurg, Buffalo, NY USA
[5] Wayne State Univ, Sch Med, Dept Neurosurg, Detroit, MI 48201 USA