1. Department of Thoracic Oncology National Hospital Organization Kyushu Cancer Center Fukuoka Japan
2. Department of Surgery and Science Graduate School of Medical Sciences, Kyushu University Fukuoka Japan
3. Department of Biostatistics Yamaguchi University Graduate School of Medicine Yamaguchi Japan
4. Research Institute for Diseases of the Chest Graduate School of Medical Sciences, Kyushu University Fukuoka Japan