Author Correction: Survival impact of treatment for chronic obstructive pulmonary disease in patients with advanced non-small-cell lung cancer

oleh: Hitomi Ajimizu, Hiroaki Ozasa, Susumu Sato, Tomoko Funazo, Yuichi Sakamori, Takashi Nomizo, Kiyomitsu Kuninaga, Tatsuya Ogimoto, Kazutaka Hosoya, Masatoshi Yamazoe, Takahiro Tsuji, Hironori Yoshida, Ryo Itotani, Kentaro Ueno, Young Hak Kim, Shigeo Muro, Toyohiro Hirai