Institution: | 1.Department of Preventive Medicine, School of Public Health, Hebei Medical University, Zhongshan East Road 361, Shijiazhuang, 050017, Hebei, People’s Republic of China ;2.Department of Epidemiology and Hygienic Statistics, School of Public Health, Hebei Province Key Laboratory of Environment and Human Health, Hebei Medical University, Zhongshan East Road 361, Shijiazhuang, 050017, Hebei, People’s Republic of China ;3.Department of Occupational and Environmental Health, School of Public Health, Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Zhongshan East Road 361, Shijiazhuang, 050017, Hebei, People’s Republic of China ; |