1. Environmental and Spatial Epidemiology Research Center, National Human Genetic Resources Center, Beijing, China
2. National Research Institute for Family Planning, Beijing, China
3. Department of Maternal and Child Health, School of Public Health, Peking University, Beijing, China
4. Institute for Environment and Climate Research, Jinan University, Guangzhou, China
5. Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
6. Center on the Early Life Origins of Disease, Department of Population, Family, and Reproductive Health, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland
7. Department of Pediatrics, School of Medicine, The Johns Hopkins University, Baltimore, Maryland
8. Department of Maternal and Child Health, National Health and Family Planning Commission of the People’s Republic of China, Beijing