1. Department of Obstetrics & Gynecolog, Dongguan Maternal and Children Hospital, Dongguan, People’s Republic of China
2. Dongguan Key Laboratory of Maternal and Fetal Medicine, Dongguan, People’s Republic of China
3. Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, People’s Republic of China
4. Dongguan Key Laboratory of Reproduction and Birth Defects Prevention and Control, Dongguan, People’s Republic of China
5. Dongguan Key Laboratory of Genetic Disorder Prenatal Testing Precision medicine, Dongguan, People’s Republic of China