1. Department of Respiratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
2. Department of Respiratory Medicine, Nanjing YuHua Hospital, Yuhua Branch of Nanjing First Hospital, Nanjing, China
3. Department of Pathology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
4. Department of Thoracic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China