1. Department of Environmental Health, School of Public Health, Fudan University, Shanghai, China
2. Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, U.S. Department of Health and Human Services, Research Triangle Park, North Carolina, USA
3. Shanghai Environmental Monitoring Center, Shanghai, China
4. Shanghai Municipal Center of Disease Control and Prevention, Shanghai, China
5. Department of Health Statistics, School of Public Health, Fudan University, Shanghai, China