Graduate College of Tianjin Medical University, Tianjin 300070, China;
Division of Pulmonary Medicine, Tianjin Haihe Hospital, Tianjin 300350, China;
Tianjin Institute of Respiratory Disease, Tianjin 300350, China;
Division of Pulmonary Medicine, Tianjin Haihe Hospital, Tianjin 300350, China;
Tianjin Institute of Respiratory Disease, Tianjin 300350, China;
Division of Pulmonary Medicine, Tianjin Haihe Hospital, Tianjin 300350, China;
Division of Pulmonary Medicine, Tianjin Haihe Hospital, Tianjin 300350, China;
Radiology Department of Tianjin Haihe Hospital, Tianjin 300350, China;
Division of Pulmonary Medicine, Tianjin Haihe Hospital, Tianjin 300350, China;