1 Department of Occupational Health and Environmental Health, School of Public Health, Jilin University, Changchun 130021, Jilin, China.
2 Radiation Medicine Key Laboratory of Ministry of Health, School of Public Health, Jilin University, Changchun 130021, Jilin, China.
3 Department of Teaching Management, Chengde Medical College, Chengde 067000, Hebei, China.
4 Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA 68198-4388.
5 Colorado Injury Control Research Center, Department of Psychology, Colorado State University, Fort Collins, Colorado, USA 80525-1876.
6 Department of Biochemistry, College of Basic Medicine, Jilin University, Changchun 130021, Jilin, China.