1. Department of Prenatal Screening and Diagnosis Center, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
2. School of Medicine, Nantong University, Nantong, Jiangsu Province 226001, China
3. School of Life Sciences, Nantong University, Nantong, Jiangsu Province 226001, China