Department of Pulmonary and Critical Care Medicine China-Japan Friendship Hospital Beijing 100029 China;
Institute of Respiratory Medicine Chinese Academy of Medical Sciences Beijing 100029 China;
National Clinical Research Center for Respiratory Diseases Beijing 100029 China;
National Center for Respiratory Medicine Beijing 100029 China;
Rehabilitation Medical Center West China Hospital Sichuan University Chengdu Sichuan 610041 China;
Institute of Respiratory Medicine Chinese Academy of Medical Sciences Beijing 100029 China;
National Clinical Research Center for Respiratory Diseases Beijing 100029 China;
National Center for Respiratory Medicine Beijing 100029 China;
Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730 China;
