[1] Beijing Univ Chinese Med, Dongzhimen Hosp, Dept Neurol, Beijing, Peoples R China
[2] Beijing Univ Chinese Med, Ctr Evidence Based Med, Beijing, Peoples R China
[3] Beijing Univ Chinese Med, Grad Sch, Beijing, Peoples R China
[4] State Food & Drug Adm, Drug Evaluat Ctr, Beijing, Peoples R China