Affiliation: | 1. Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center Affiliated to Guangzhou Medical University, Guangzhou, China;2. Department of Ultrasound, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China;3. Prenatal Diagnosis Center, Dongguan Women and Children Healthcare Hospital, Dongguan, China;4. AmCare Genomics Laboratory, Guangzhou, China;5. AmCare Genomics Laboratory, Guangzhou, China Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas |