1. Department of Internal Medicine, National Hospital Organization Kinki-Chuo Chest Medical Center, Japan
2. Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Japan
3. Department of Pathology, National Hospital Organization Kinki-Chuo Chest Medical Center, Japan
4. Department of Pathology, National Hospital Organization Minami Wakayama Medical Center, Japan
5. Department of Respiratory Medicine, Iwata City Hospital, Japan
6. Department of Radiology, National Hospital Organization Kinki-Chuo Chest Medical Center, Japan