1 Department of Gynecology, Haining Maternal and Child Health Hospital, No. 309, East Shuiyueting Road, Xishi Street, Haining, Zhejiang, 314400, People's Republic of China. Electronic address: wyc15857360696@163.com.
2 Department of Gynecology, Haining Maternal and Child Health Hospital, No. 309, East Shuiyueting Road, Xishi Street, Haining, Zhejiang, 314400, People's Republic of China.