1. Reproductive Medicine Center, The Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
2. Department of Central laboratory, The Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
3. Obstetrics and Gynecology, The First People’s Hospital of Nantong City, Nantong, Jiangsu, China
4. Department of Radiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
5. International Genome Center of Jiangsu University, Zhenjiang, Jiangsu, China