Affiliation: | Department of Thoracic and Breast Surgery, Oita University Faculty of Medicine, Oita, Japan;Department of Surgery and Science, Kyushu University Graduate School of Medicine, Fukuoka, Japan;Biostatistics Laboratory, Clinical Research Institute, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan;Department of Biostatistics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan |