[1] Hebei Med Univ, Dept Neurol, Shijiazhuang, Hebei, Peoples R China
[2] Handan Cent Hosp, Dept Neurol, Handan, Hebei, Peoples R China
[3] Hengshui Peoples Hosp, Dept Neurol, Hengshui, Hebei, Peoples R China
[4] Hebei Univ, Dept Neurol, Affiliated Hosp, Baoding, Hebei, Peoples R China
[5] Chengde Med Univ, Dept Neurol, Affiliated Hosp, Chengde, Hebei, Peoples R China
[6] Hebei Med Univ, Dept Neurol, Hosp 2, Shijiazhuang, Hebei, Peoples R China
[7] Peking Univ First Hosp, Dept Neurol, Beijing, Peoples R China
[8] Hebei Med Univ, Key Lab Clin Neurol, Minist Educ, Shijiazhuang, Hebei, Peoples R China
[9] Neurol Lab Hebei Prov, Shijiazhuang, Hebei, Peoples R China