1. Department of Internal Medicine; National Hospital Organization Kinki-Chuo Chest Medical Center; Sakai Japan
2. Department of Respiratory Medicine, Allergy and Rheumatic Diseases; Osaka University Graduate School of Medicine; Suita Japan
3. Clinical Research Center; National Hospital Organization Kinki-Chuo Chest Medical Center; Sakai Japan
4. Department of Pathology; National Hospital Organization Minami Wakayama Medical Center; Tanabe Japan
5. Department of Pathology; National Hospital Organization Kinki-Chuo Chest Medical Center; Sakai Japan
6. Division of Clinical Trial; National Hospital Organization Kinki-Chuo Chest Medical Center; Sakai Japan
7. Department of Radiology; National Hospital Organization Kinki-Chuo Chest Medical Center; Sakai Japan