1. School of Public Health Southwest Medical University Luzhou China
2. Chengdu Jintang Municipal Center for Disease Control and Prevention Chengdu China
3. State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing China
4. Luzhou Ecological Environment Monitoring Center of Sichuan Province Luzhou China
5. School of Pharmacy Southwest Medical University Luzhou China
6. School of Environmental and Resource Southwest University of Science and Technology Mianyang China