1. Research Center for Reproductive Medicine Shantou University Medical College Shantou China
2. Prenatal Diagnosis Center Boai Hospital of Zhongshan Zhongshan China
3. The Second School of Clinical Medicine, Southern Medical University Guangzhou China
4. Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province The Third Affiliated Hospital of Guangzhou Medical University Guangzhou China
5. Chengdu Jinxin Research Institute for Reproductive Medicine and Genetics Chengdu China