[Li, Pian; He, Junyan; Yang, Dong] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Oncol, Hengyang 421001, Hunan, Peoples R China.
[Zhang, Xiaoli] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Pathol, Hengyang 421001, Hunan, Peoples R China.
[Tan, Yini; Li, Yi] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Obstet & Gynecol, 69 Chuanshan Rd, Hengyang 421001, Hunan, Peoples R China.