[1] Capital Med Univ, Beijing Tiantan Hosp, China Natl Clin Res Ctr Neurol Dis, Dept Neurol, Beijing 100071, Peoples R China
[2] Tianjin Huanhu Hosp, Tianjin Dementia Inst, Dept Neurol, Tianjin Key Lab Cerebrovasc & Neurodegenerat Dis, Tianjin 300350, Peoples R China
[3] Chinese Acad Med Sci & Peking Union Med Coll, Peking Union Med Coll Hosp, Dept Neurol, Beijing 100010, Peoples R China
[4] Peking Univ, China Japan Friendship Sch Clin Med, Beijing 100020, Peoples R China