1. Department of Maternal, Child and Adolescent Health School of Public Health Nanjing Medical University Nanjing China
2. Sir Run Run Hospital Nanjing China
3. Qingdao Municipal Center for Disease Control & Prevention Qingdao China
4. Department of Nutrition The Affiliated Hospital of Qingdao University Qingdao China
5. Changzhou Center for Disease Control and Prevention Changzhou China
6. Kun Shan Market Regulatory Administration Suzhou China
7. Department of Nutrition and Food Hygiene School of Public Health Peking University Beijing China
8. Nanjing Municipal Center for Disease Control and Prevention Nanjing China
9. Nanjing Brain Hospital Nanjing China
10. The Second People's Hospital of Lianyungang Lianyungang China
11. Huai'an Maternal and Child Health Center Huai'an China
12. Suzhou Maternal and Child Health Care & Family Planning Service Center Suzhou China