Tianjin Medical University;
Tianjin 300070;
China;
Department of Pathology;
Tianjin Chest Hospital;
Tianjin 300222;
China;
Department of Pathology;
Tianjin Chest Hospital;
Tianjin 300222;
China;
Department of Pathology;
Tianjin Chest Hospital;
Tianjin 300222;
China;
Department of Pathology;
Tianjin Chest Hospital;
Tianjin 300222;
China;
Department of Pathology;
Tianjin Chest Hospital;
Tianjin 300222;
China;