[Yao, Xiang-Rong; He, Jun-Yan] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Oncol, Hengyang, Peoples R China.
[Yao, Xiang-Rong; Xiao, Fang-Zhu] Univ South China, Sch Publ Hlth, Hengyang, Peoples R China.
[Xiao, Wen-Tao] Nantong Univ, Affiliated Hosp, Med Sch, Dept Radiat Oncol, Nantong, Peoples R China.
[Huang, Cui-Qin] Univ South China, Hengyang Med Sch, Affiliated Hosp 1, Dept Pathol, Hengyang, Peoples R China.