1. The Center for Medical Genetics and Molecular Diagnosis, Shenzhen Second People's Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong 518035, P.R. China
2. Prenatal Diagnosis Center, Shenzhen Second People's Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong 518035, P.R. China