[1] Guangxi Med Univ, Canc Hosp, Dept Comprehens Internal Med, Nanning 530022, Guangxi, Peoples R China
[2] Cent South Univ, Xiangya Hosp, Dept Neurol, Changsha 410008, Hunan, Peoples R China
[3] Guangxi Med Univ, Affiliated Hosp 1, Dept Spine & Osteopathy Surg, Nanning 530022, Guangxi, Peoples R China