Clinical impact of pembrolizumab combined with chemotherapy in elderly patients with advanced non-small-cell lung cancer

Kenji Morimoto, Tadaaki Yamada, Tadaaki Yamada, Takashi Yokoi, Takashi Kijima, Yasuhiro Gotô, Akira Nakao, Makoto Hibino, Takayuki Takeda, Hiroyuki Yamaguchi, Chieko Takumi, Masafumi Takeshita, Yusuke Chihara, Takahiro Yamada, Takahiro Yamada, Osamu Hiranuma, Yoshie Morimoto, Masahiro Iwasaku, Yoshiko Kaneko, Junji Uchino, Koichi Takayama