1. Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China‐Japan Friendship Hospital; National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine Chinese Academy of Medical Sciences Beijing China
2. Department of Pulmonary and Critical Care Medicine Zheng‐Zhou Central Hospital Affiliated to Zhengzhou University Zhengzhou China
3. Department of Pathology, Center of Respiratory Medicine, China‐Japan Friendship Hospital; National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine Chinese Academy of Medical Sciences Beijing China
4. Department of Radiology, Center of Respiratory Medicine, China‐Japan Friendship Hospital; National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine Chinese Academy of Medical Sciences Beijing China