Shizuoka Cancer Center - Division of Thoracic Oncology, Wakayama Medical University - Department of Pulmonary Medicine and Medical Oncology, Yokohama City University, Niigata Cancer Center Hospital, Shizuoka Cancer Center - Division of Thoracic Oncology, National Hospital Organization Shikoku Cancer Center, National Cancer Center Hospital East, Osaka City General Hospital, Tokyo Medical University, Oita University, National Hospital Organization Kyushu Cancer Center, Okayama University, Kyoto University, Kindai University, Kyushu University, Nagoya University, National Hospital Organization (NHO) - Nagoya Medical Center, Yokohama Municipal Citizen's Hospital, Chiba University - Chiba University Hospital and National Cancer Center Hospital East