Tomohiro, Murakawa, Hajime, Sato, Sakae, Okumura, Jun, Nakajima, Hirotoshi, Horio, Yuichi, Ozeki, Hisao, Asamura, Norihiko, Ikeda, Hajime, Otsuka, Haruhisa, Matsuguma, Ichiro, Yoshino, Masayuki, Chida, Mitsuo, Nakayama, Toshihiko, Iizasa, Meinoshin, Okumura, Satoshi, Shiono, Ryoichi, Kato, Tomohiko, Iida, Noriyuki, Matsutani, Masafumi, Kawamura, Yukinori, Sakao, Kazuhito, Funai, Go, Furuyashiki, Hirohiko, Akiyama, Shigeki, Sugiyama, Naoki, Kanauchi, Yuji, Shiraishi, Metastatic Lung Tumor Study Group of Japan, Tomohiro, Murakawa, Hajime, Sato, Sakae, Okumura, Jun, Nakajima, Hirotoshi, Horio, Yuichi, Ozeki, Hisao, Asamura, Norihiko, Ikeda, Hajime, Otsuka, Haruhisa, Matsuguma, Ichiro, Yoshino, Masayuki, Chida, Mitsuo, Nakayama, Toshihiko, Iizasa, Meinoshin, Okumura, Satoshi, Shiono, Ryoichi, Kato, Tomohiko, Iida, Noriyuki, Matsutani, Masafumi, Kawamura, Yukinori, Sakao, Kazuhito, Funai, Go, Furuyashiki, Hirohiko, Akiyama, Shigeki, Sugiyama, Naoki, Kanauchi, Yuji, Shiraishi, and Metastatic Lung Tumor Study Group of Japan