1. Department of Occupational Health Nantong Center for Disease Control and Prevention Nantong Jiangsu P.R. China
2. Department of Nephrology Affiliated Hospital of Nantong University Nantong Jiangsu P.R. China
3. Department of Nephrology The First People's Hospital of Nantong Nantong Jiangsu P.R. China
4. School of Mechanical and Engineering Nantong University Nantong Jiangsu P.R. China
5. Department of Epidemiology and Medical Statistics, School of Public Health Nantong University Nantong Jiangsu P.R. China