1. Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong, Jiangsu, China;
2. Affiliated Nantong Hospital of Shanghai University, Nantong, Jiangsu, China;
3. Affiliated Maternity and Child Healthcare Hospital of Nantong University, 399 Century Ave., Nantong, Jiangsu, China, 226018
4. Nantong Key Laboratory of Genetics and Reproductive Medicine, 339 Century Ave., Nantong, Jiangsu, China, 226018;