[1] Nanjing Med Univ, Dept Radiotherapy, Jiangsu Canc Hosp, 42 Baiziting Rd, Nanjing 210009, Peoples R China
[2] Nanjing Med Univ, Jiangsu Inst Canc Res, 42 Baiziting Rd, Nanjing 210009, Peoples R China
[3] Nanjing Med Univ, Affiliated Canc Hosp, 42 Baiziting Rd, Nanjing 210009, Peoples R China
[4] Anqing Second Peoples Hosp, Dept Oncol, Anqing, Peoples R China