[Liu, Yu; You, Ting; Zhang, Bihong; Sun, Zhilu] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Emergency Med, Hengyang, Hunan, Peoples R China.
[Tang, Jie] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Pain, Hengyang, Hunan, Peoples R China.
[Liu, Jing] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Rehabil, 69 Chuanshan Rd, Hengyang 421001, Hunan, Peoples R China.