1. Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei 230031, Anhui, China
2. Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei 230031, Anhui, China
3. China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
4. Department of Epidemiology and Health Statistics, School of Public Health, Wannan Medical College, Wuhu 241002, Anhui, China