1. Department of Medical Genetics & the Prenatal Diagnosis Center of Hunan Province Hunan Provincial Maternal and Child Health Care Hospital Changsha Hunan China
2. NHC Key Laboratory of Birth Defects for Research and Prevention Hunan Provincial Maternal and Child Health Care Hospital Changsha Hunan China
3. Center for Medical Genetics School of Life Sciences & Hunan Key Laboratory of Medical Genetics Central South University Changsha Hunan China
4. Department of Health Care Hunan Provincial Maternal and Child Health Care Hospital Changsha Hunan China