[Tang, J; Wan, Ziqing; Zhou, Xiaofang; Tang, Jie; Liu, Mu] Cent South Univ, Hunan Canc Hosp, Affiliated Canc Hosp, Dept Gynecol Oncol,Xiangya Sch Med, Changsha 410013, Peoples R China.
[Cao, Yumei; Sun, Lijuan] Cent Hosp Shaoyang, Dept Gynecol & Obstet, Shaoyang 422000, Peoples R China.
[Luo, Guangxia; Tan, Shanmei] Univ South China, Peoples Hosp Huaihua 1, Dept Gynecol & Obstet, Affiliated Huaihua Hosp, Huaihua 418000, Peoples R China.
[Liu, Tingting] First Peoples Hosp Changde, Dept Gynecol & Obstet, Changde 415000, Peoples R China.
[Yao, Ying; Xiao, Wangli] First Peoples Hosp Yueyang, Dept Gynecol & Obstet, Yueyang 414000, Peoples R China.