1. Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory Medicine and Beijing Chao‐Yang Hospital, Capital Medical University Beijing China
2. Department of Pathology, Beijing Chao‐Yang Hospital Capital Medical University Beijing China
3. Department of Epidemiology and Health Statistics School of Public Health, Capital Medical University Beijing China
4. Department of Thoracic Surgery Beijing Institute of Respiratory Medicine and Beijing Chao‐Yang Hospital, Capital Medical University Beijing China