1. National Center for Respiratory Medicine, Beijing, China
2. Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
3. State Key Laboratory of Respiratory Health and Multimorbidity, Beijing, China
4. National Clinical Research Center for Respiratory Diseases, Beijing, China
5. Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
6. Liuyang Traditional Chinese Medicine Hospital, Changsha, Hunan, China