1. Fujian Obstetrics and Gynecology Hospital, Fuzhou, China
2. Division of Birth Cohort Study, Fujian Maternity and Child Health Hospital, Fuzhou, China
3. Department of Computer Technology, Fujian Maternity and Child Health Hospital, Fuzhou, China
4. Department of Pediatrics, Fujian Maternity and Child Health Hospital, Fuzhou, China
5. Fujian Children’s Hospital, Fuzhou, China