1. Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, China.
2. Department of Thoracic Surgery, The TCM Hospital of Changzhou Affiliated to Nanjing University of TCM, Changzhou, China.
3. Department of Critical Care Medicine, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, China.