[1] Zhengzhou Univ, Affiliated Hosp 2, Dept Intens Care Unit, Zhengzhou, Peoples R China
[2] Nantong Univ, Dept Neurosurg, Affiliated Hosp 2, Nantong, Peoples R China
[3] First Peoples Hosp Nantong City, Nantong, Peoples R China
[4] Tianjin Med Univ, Dept Orhopaed Surg, Baodi Clin Coll, Tianjin, Peoples R China
[5] Tianjin Med Univ, Dept Clin, Coll Neurol Neurosurg & Neurorehabil, Tianjin, Peoples R China
[6] Tianjin Huanhu Hosp, Dept NeuroSpine Surg, Tianjin, Peoples R China
[7] Tianjin Med Univ, Dept Grad Sch, Tianjin, Peoples R China
[8] Tianjin Huanhu Hosp, Dept Neurosurg, Tianjin, Peoples R China
[9] Sun Yat Sen Univ, Sun Yat Sen Mem Hosp, Dept Grad Sch, Guangzhou, Peoples R China