1. Department of General Thoracic Surgery Osaka University Graduate School of Medicine Osaka Japan
2. Department of General Thoracic Surgery Osaka International Cancer Institute Osaka Japan
3. Department of Thoracic Surgery Kanagawa Cancer Center Kanagawa Japan
4. Division of Thoracic Surgery Department of Surgery Jikei University School of Medicine Tokyo Japan
5. Department of Thoracic Surgery Okayama University Hospital Okayama Japan
6. Department of Thoracic Surgery Japanese Red Cross Kumamoto Hospital Kumamoto Japan
7. Department of Thoracic Surgery National Cancer Center Hospital Tokyo Japan
8. Division of General Thoracic Surgery Department of Surgery, School of Medicine Keio University Tokyo Japan
9. Department of General Thoracic Surgery Dokkyo Medical University Tochigi Japan
10. Department of Thoracic Surgery Kyoto University Graduate School of Medicine Kyoto Japan
11. Department of Thoracic Surgery Jichi Medical School Tochigi Japan
12. Department of Surgical Oncology Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
13. Department of Oncology, Immunology and Surgery Nagoya City University Graduate School of Medical Sciences Nagoya Japan
14. Department of Mathematics Tokyo University of Science Tokyo Japan
15. Department of General Thoracic Surgery National Hospital Organization Toneyama Hospital Osaka Japan
16. Department of General Thoracic Surgery, Graduate School of Medicine Chiba University Chiba Japan