1. Department of Obstetrics, Maternity and Child Health Hospital of Zhenjiang, No. 20 Zhengdong Road, Zhenjiang, Jiangsu 212001, China
2. Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
3. Central Laboratory of Medicine, Maternity and Child Health Hospital of Zhenjiang, No. 20 Zhengdong Road, Zhenjiang, Jiangsu 212001, China
4. Obstetrics and Gynecology, The Affiliated People Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, China
5. Laboratory of Medicine, Maternity and Child Health Hospital of Zhenjiang, No. 20 Zhengdong Road, Zhenjiang, Jiangsu 212001, China