1. Department of Information Management Maternal and Child Health Hospital of Hunan Province Changsha China
2. NHC Key Laboratory of Birth Defect for Research and Prevention Hunan Provincial Maternal and Child Health Care Hospital Changsha China
3. Department of Health Management Maternal and Child Health Hospital of Hunan Province Changsha China
4. Obstetrics Department of Shunde Hospital The First People's Hospital of Shunde, Southern Medical University Foshan China
5. Department of Medical Genetics Maternal and Child Health Hospital of Hunan Province Changsha China