1. Department of Clinical Genetics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
2. Department of Reproductive Laboratory, Shenyang Jinghua Hospital, Shenyang, Liaoning, People’s Republic of China
3. Department of Obstetrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China