[1] Nanjing Med Univ, Affiliated Hosp 1, Dept Radiat Oncol, Nanjing 210029, Jiangsu, Peoples R China
[2] Nantong Tumor Hosp, Dept Radiat Oncol, Nantong 226361, Peoples R China
[3] Nanjing Med Univ, Affiliated Hosp 1, Dept Gen Internal Med, Nanjing 210029, Jiangsu, Peoples R China