1. Department of General Thoracic Surgery, National Hospital Organization Kure Medical Center and Chugoku Cancer Center
2. Department of Thoracic Surgery, National Hospital Organization Higashihiroshima Medical Center
3. Department of Diagnostic Pathology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center
4. Department of Respiratory Medicine, National Hospital Organization Kure Medical Center and Chugoku Cancer Center