[1] Zhengzhou Univ, Affiliated Canc Hosp, Dept Radiat Oncol, Zhengzhou, Peoples R China
[2] Zhengzhou Univ, Acad Med Sci, Zhengzhou, Peoples R China
[3] Univ Hong Kong, Sch Biol Sci, Food & Nutr Sci, Hong Kong, Peoples R China
[4] Zhengzhou Univ, Affiliated Canc Hosp, Dept Radiat Oncol, 127 Dongming Rd, Zhengzhou 450008, Henan, Peoples R China