[Liang, Lu-Chang; Zhao, Lei] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Gastrointestinal Surg, Hengyang, Hunan, Peoples R China.
[Yu, Bo] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Pharmaceut, Hengyang, Hunan, Peoples R China.
[He, Xu-Hua; Hu, Han-Xiang] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Urol, Hengyang, Hunan, Peoples R China.
[Zhang, Yan-Min] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Pediat, 69 Chuanshan Rd, Hengyang 421001, Hunan, Peoples R China.