1. Department of Pulmonary and Critical Care Medicine Center of Respiratory Medicine China‐Japan Friendship Hospital Beijing China
2. First Hospital of Qinhuangdao Beijing China
3. National Clinical Research Center for Respiratory Diseases Beijing China
4. China‐Japan Friendship School of Clinical Medicine Peking University Beijing China
5. Capital Medical University Beijing China
6. the Graduate School of Peking Union Medical College Chinese Academy of Medical Science and Peking Union Medical College Beijing China