1. Department of Epidemiology and Health Statistics School of Public Health Southeast University Nanjing China
2. Key Laboratory of Environmental Medicine Engineering Ministry of Education School of Public Health Southeast University Nanjing China
3. Jiangsu Provincial Center for Disease Control and Prevention Nanjing China
4. Department of Laboratory Medicine The First Affiliated Hospital Nanjing Medical University Nanjing China
5. The State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China