[1] Capital Med Univ, Beijing Tiantan Hosp, Dept Neurol, Headache Ctr, Beijing, Peoples R China
[2] Capital Med Univ, Beijing Tiantan Hosp, Tiantan Neuroimaging Ctr Excellence, China Natl Clin Res Ctr Neurol Dis, Beijing, Peoples R China
[3] Capital Med Univ, Beijing Tiantan Hosp, Dept Radiol, Beijing, Peoples R China
[4] Zhengzhou Univ, Dept Neurol, Affiliated Hosp 1, Zhengzhou, Peoples R China
[5] Capital Med Univ, Beijing Tiantan Hosp, Dept Radiol, Beijing, Peoples R China