1. Guangdong provincial center for disease control and prevention Guangdong China
2. Department of Epidemiology and Biostatistics School of Public Health Guangdong Pharmaceutical University Guangzhou China
3. State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory Disease Guangzhou Institute of Respiratory HealthFirst Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong China
4. Department of Thoracic Surgery Guangzhou Institute for Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong China
5. School of Public Health Southern Medical University Guangzhou China
6. School of Medicine Jinan University Guangzhou China