[Xie, Xianshun; Xie, Changjun] Univ South China, Affiliated Hosp 2, Hengyang Med Sch, Dept Oncol Hematol, Hengyang 421001, Hunan, Peoples R China.
[Jiang, Yiling] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Oncol, Hengyang, Hunan, Peoples R China.
[Liu, Sumei] Univ South China, Affiliated Hosp 2, Hengyang Med Sch, Dept Emergency, Hengyang, Hunan, Peoples R China.