1. Clinical Research Center of Occupational Diseases The Affiliated Shanghai Pulmonary Hospital of Tongji University School of Medicine Shanghai China
2. National Institute for Occupation Health and Poison Control Chinese Center for Disease Control and Prevention Beijing China
3. Department of Occupational Disease Suzhou No. 5 People's Hospital Suzhou China
4. School of Public Health Qingdao University Qingdao China
5. Institute of Occupational Disease Prevention Hubei Provincial Center for Disease Control and Prevention Wuhan China
6. Department of Public Administration Huangshi Center for Disease Control and Prevention Huangshi China
7. Occupation Disease Prevention and Control Center Section Huangshi Center for Disease Control and Prevention Huangshi China
8. Department of Enviromental Health Suzhou Center for Disease Control and Prevention Suzhou China
9. Institute of Occupational Disease Prevention Jiangsu Provincial Center for Disease Control and Prevention Nanjing China
10. Department of Respiratory Medicine Honghe Prefecture Third People's Hospital Honghe China