1. Department of Biostatistics and Epidemiology; School of Public Health; China Medical University; Shenyang Liaoning Province China
2. Department of Environmental and Occupational; School of Public Health; China Medical University; Shenyang Liaoning Province China
3. Department of Epidemiology; College for Public Health and Social Justice; Saint Louis University; Saint Louis MO USA
4. Department of Ambient Air Pollution Monitor; Shenyang Environmental Monitoring Center; Shenyang, Liaoning Province; China
5. Department of Biostatistics; School of Public Health; Saint Louis University; Saint Louis MO USA
6. Department of Epidemiology; School of Public Health; Sun Yat-sen University; Guangzhou China