1. Medical Genetic Center, Guangdong Women and Children Hospital, Guangzhou, People’s Republic of China
2. Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, People’s Republic of China
3. Guangdong Women and Children's Hospital, Guangzhou Medical University, Guangzhou, People’s Republic of China
4. Department of Gynecology and Obstetrics, Guangdong Women and Children Hospital, Guangzhou, People’s Republic of China
5. Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, People’s Republic of China