1Department of Thoracic Surgery, National Cancer Center Hospital East, Chiba, Japan
2Department of Mathematics, Science University of Tokyo, Tokyo, Japan
3Department of Thoracic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
4Department of Thoracic Surgery, Keio University School of Medicine, Tokyo, Japan
5Department of Respiratory Medicine, Okayama University Medical School, Okayama, Japan
6Department of Respiratory Medicine, Juntendo University School of Medicine, Tokyo, Japan
7Department of Medical Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
8Division of Respiratory Disease, National Defense Medical College, Saitama, Japan
9Department of General Thoracic Surgery, Suita Tokushukai Hospital, Osaka, Japan
10Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
11Department of General Thoracic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan