Beijing University of Chinese Medicine. National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China. National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, 100029, China. School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College; State Key Laboratory of Respiratory Health and Multimorbidity; Key Laboratory of Pathogen Infection Prevention and Control (Peking Union Medical College), Ministry of Education, Beijing, China. National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Clinical Research and Data Management, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China. Graduate School of Capital Medical University, Beijing, China. Peking University China‑Japan Friendship School of Clinical Medicine, Beijing, P.R. China. The First Bethune Hospital of Jilin University, Beijing, China. The First Clinical Medical College, Shanxi Medical University, Taiyuan, China. Changping Laboratory, Beijing, China. Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China. Department of Physiology, Institute of Basic Medical Sciences, State Key Laboratory of Respiratory Health and Multimorbidity, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College; National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China. National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Clinical Research and Data Management, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China. wg_snake@163.com. National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, 100029, China. zhaizhenguo2011@126.com. National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases, Beijing, 100029, China. cyh-birm@263.net. Chinese Academy of Medical Sciences, Peking Union Medical College, No 2, East Yinghua Road, Chaoyang District, Beijing, 100029, China. cyh-birm@263.net. Department of Respiratory Medicine, Capital Medical University, No 2, East Yinghua Road, Chaoyang District, Beijing, 100029, China. cyh-birm@263.net.