[1] Sichuan Univ, West China Hosp, Dept Neurol, Chengdu, Peoples R China
[2] Sichuan Univ, West China Hosp, Chinese Evidence Based Med Ctr, Chengdu, Peoples R China
[3] First Peoples Hosp Xianyang, Dept Neurol, Xianyang, Peoples R China
[4] Sichuan Univ, West China Hosp, Ctr Biostat Design Measurement & Evaluat CBDME, Dept Clin Res & Management, Chengdu, Peoples R China
[5] Southwest Jiaotong Univ, Affiliated Hosp, Dept Neurol, Chengdu, Peoples R China
[6] Third Peoples Hosp Chengdu, Chengdu, Peoples R China
[7] Sichuan Univ, West China Hosp, Cochrane China Ctr, MAGIC China Ctr,Chinese Evidence Based Med Ctr,Dep, Chengdu, Peoples R China
[8] Sichuan Univ, West China Hosp, MAGIC China Ctr, Chinese Evidence Based Med Ctr,Cochrane China Ctr,, Chengdu, Peoples R China
[9] Sichuan Univ, West China Hosp, 37 Guoxue Alley, Chengdu, Sichuan, Peoples R China