Jiangsu University - Reproductive Center, Jiangsu University - Reproductive Center, Jiangsu University - Reproductive Center, The First People's Hospital of Nantong City - Department of Obstetrics and Gynecology, Jiangsu University - Reproductive Center, Jiangsu University - Reproductive Center, Jiangsu University - Department of Central Laboratory, Jiangsu University - Department of Central Laboratory, Jiangsu University - Reproductive Center, Jiangsu University - Reproductive Center, Jiangsu University - Department of Central Laboratory, Jiangsu University - Department of Central Laboratory, Jiangsu University - Department of Radiology and Jiangsu University - Reproductive Center