[Li, R.; Li, P.; Yang, D.; Wang, S.; Dong, H.; Chen, X.; Meng, Z.; Huang, H.; Kang, M.] Guangxi Med Univ, Dept Radiat Oncol, Affiliated Hosp 1, Nanning, Peoples R China.

[Meng, Z.] Guangxi Univ Chinese Med, Dept Oncol, Affiliated Hosp 1, Nanning, Peoples R China.

[Li, P.] Univ South China, Dept Oncol Radiotherapy, Affiliated Hosp 1, Hengyang Med Sch, Nanning, Peoples R China.

[Yang, D.] Guangxi Med Univ, Dept Radiat Oncol, Affiliated Hosp 1, Guangxi 530021, Peoples R China.

[Dong, H.] Second Peoples Hosp Yichang 2, Yichang, Peoples R China.