Author list:
Xue Yang1, Ling He1, Xiao
Xiao1, Lei Yan1, Liye
Shi1, Zhen Ren1, Haiyi
Cai2, Chun Fu1
Department
of Obstetrics and Gynecology, Second Xiangya Hospital, Central South
University, Changsha, 410011, China.
Department of Clinical Medicine, Harbin Medical University, Harbin,
150081, China.