1. Department of Nutrition and Food Hygiene, School of Public Health, Peking University, NO.38 Xueyuan Road, Haidian District, Beijing 100083, China
2. PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development, NO.38 Xueyuan Road, Haidian District, Beijing 100083, China
3. Nutrition and Child Development Section, UNICEF Headquarters, 3 United Nations Plz, New York, NY 10017, USA
4. Child Health and Development Section, UNICEF Office for China, NO.12 Sanlitun Road, Chaoyang District, Beijing 100600, China
5. Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, NO.38 Xueyuan Road, Haidian District, Beijing 100083, China