1. Department of Respiratory Medicine; Affiliated Changzhou No. 2 People's Hospital; Nanjing Medical University; Changzhou China
2. Department of Respiratory Medicine; Nanjing General Hospital of Nanjing Military Command; Nanjing China
3. Health Science Center; Jiangsu University; Zhenjiang China
4. Department of Respiratory Medicine; Affiliated Jiangbing Hospital; Jiangsu University; Zhenjiang China
5. Department of Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
6. Department of Respiratory Medicine; Second Affiliated Hospital; Nanjing Medical University; Nanjing China