1. Department of Gynecology Ningbo Women and Children's Hospital Ningbo Zhejiang China
2. The Second Clinical Medical College Zhejiang Chinese Medical University Hangzhou Zhejiang China
3. The First Clinical Medical College Zhejiang Chinese Medical University Hangzhou Zhejiang China
4. Department of Medicine Ningbo Women and Children's Hospital Ningbo Zhejiang China
5. Department of Endocrinology The First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou China
6. Department of Obstetrics and Gynecology Ningbo Yinzhou No. 2 Hospital Ningbo Zhejiang China