1. Department of Thoracic Malignancy; Osaka Prefectural Medical Center for Respiratory and Allergic Diseases; Osaka
2. Department of Thoracic Oncology, Respiratory Endoscopy Division; National Cancer Center Hospital; Tokyo; Japan
3. Department of Radiology; Osaka Prefectural Medical Center for Respiratory and Allergic Diseases; Osaka
4. Department of Pathology; Osaka Prefectural Hospital Organization; Osaka Prefectural Medical Center for Respiratory and Allergic Diseases; Osaka