1. Department of Obstetrics and Gynecology, Peking University International Hospital, Beijing, People’s Republic of China
2. Department of Orthodontics, Capital Medical University School of Stomatology, Beijing, People’s Republic of China
3. School of Medicine, Xiamen University, Xiamen, People’s Republic of China
4. Jiaen Genetics Laboratory, Beijing Jiaen Hospital, Beijing, People’s Republic of China