[Li, Jie; Tian, Shao-Wen; Chen, Fang-Ling] Univ South China, Dept Physiol, Hengyang Med Coll, Hengyang 421001, Hunan, Peoples R China.
[Wang, Bo] Univ South China, Affiliated Hosp 1, Dept Anesthesiol, Hengyang 421001, Hunan, Peoples R China.
[Tian, Shao-Wen] Guilin Med Univ, Guangxi Key Lab Brain & Cognit Neurosci, Guilin 541000, Guangxi, Peoples R China.
[Long, Chen] Cent S Univ, Xiangya Hosp 2, Dept Minimally Invas Surg, Changsha 410011, Hunan, Peoples R China.