1. Prenatal Diagnostic CenterGuangzhou Women and Children's Medical Center Affiliated to Guangzhou Medical University Guangzhou China
2. Department of UltrasoundThe Sixth Affiliated Hospital of Sun Yat‐sen University Guangzhou China
3. Prenatal Diagnosis CenterDongguan Women and Children Healthcare Hospital Dongguan China
4. AmCare Genomics Laboratory Guangzhou China
5. Department of Molecular and Human GeneticsBaylor College of Medicine Houston Texas