1. Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Jianghan University , Wuhan, China
2. Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
3. Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China