[Peng, Hongchun] Univ South China, Affiliated Changsha Cent Hosp, Hengyang Med Sch, Dept Orthoped, Changsha, Peoples R China.
[Su, Yingjie; Ding, Ning; Ding, N] Univ South China, Affiliated Changsha Cent Hosp, Hengyang Med Sch, Dept Emergency Med, 161 Shaoshan South Rd, Changsha 410004, Hunan, Peoples R China.
[Luo, Ju] Univ South China, Affiliated Changsha Cent Hosp, Hengyang Med Sch, Dept Geriatr, 161 Shaoshan South Rd, Changsha 410004, Hunan, Peoples R China.