1. Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University , Guangzhou, Guangdong Province, People’s Republic of China
2. Inner Mongolia Mengniu Dairy (Group) Co., Ltd , Beijing, People’s Republic of China
3. Bellamy Food Trade (Shanghai) Co., Ltd , Shanghai, People’s Republic of China
4. School of Public Health, Sun Yat-sen University , Guangzhou, Guangdong Province, People’s Republic of China
5. Vanke School of Public Health, Tsinghua University , Beijing, People’s Republic of China