Affiliations
1Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China.
2The Second School of Medicine, Wenzhou Medical University, Zhejiang 325000, Wenzhou, China.
Correspondent authors :
Yu Zhao, Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, 306 Hualongqiao road, Wenzhou, 325000, China; E-mail:zhaoyu196035@163.com; Tel: 86-577- 88002230; Fax: 86-577-88832693.
Qiong Zhang, Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, 306 Hualongqiao road ,Wenzhou, 325000, China; E-mail:joan_zhang2002@sina.com; Tel: 86-577- 88002230; Fax: 86-577-88832693.