1. 1Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.
2. 2Department of Thoracic Oncology, Osaka International Cancer Institute, Chuo-ku, Osaka, Japan.
3. 3Department of Internal Medicine, Saiseikai Utsunomiya Hospital, Utsunomiya, Tochigi, Japan.
4. 4Department of Respiratory Medicine, National Hospital Organization Iwakuni Clinical Center, Iwakuni, Yamaguchi, Japan.
5. 5Department of Medical Oncology, Osaka City General Hospital, Miyakojima-ku, Osaka, Japan.
6. 6Department of Respiratory Medicine, Itami City Hospital, Itami, Hyogo, Japan.
7. 7Department of Medical Oncology, Japanese Red Cross Medical Center, Shibuya-ku, Tokyo, Japan.
8. 8Department of Thoracic Oncology, Kanagawa Cancer Center, Yokohama, Kanagawa, Japan.
9. 9Department of Respiratory Medicine, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.
10. 10Department of Respiratory Medicine, Ikeda City Hospital, Ikeda, Osaka, Japan.
11. 11Department of Thoracic Surgery, Omagari Kosei Medical Center, Daisen, Akita, Japan.
12. 12Department of Respiratory Medicine, Graduate School of Medicine, Osaka Metropolitan University, Abeno-ku, Osaka, Japan.