1. Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
2. Renji College, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
3. The First Clinical College, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
4. Department of Respiratory Medicine, Ruian People’s Hospital, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China