Department of Pulmonary Diseases, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;
Department of Pulmonary Diseases, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;
Department of Pulmonary Diseases, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;
Department of Pulmonary Diseases, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;
Department of Pulmonary Diseases, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;
Department of Pulmonary Diseases, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;