[Wu, Hongliang; Ou, Hanxiao; Chen, Zhuo; Wu, Peng; Mo, Zhongcheng] Univ South China, Hunan Prov Innovat Training Base Med Postgrad, YueYang Maternal Child Med Hlth Hosp, Yueyang 414000, Hunan, Peoples R China.
[Wu, Hongliang; Ou, Hanxiao; Chen, Zhuo; Wu, Peng; Mo, Zhongcheng] Yueyang Women & Childrens Med Ctr, Yueyang 414000, Hunan, Peoples R China.
[Ou, Hanxiao; Mo, Zhongcheng] Univ South China, Hengyang Med Sch, Clin Anat & Reprod Med Applicat Inst, Dept Histol & Embryol, Hengyang, Hunan, Peoples R China.
[Mo, Zhongcheng] Univ South China, 28 West Changsheng Rd, Hengyang 421001, Hunan, Peoples R China.