Current status and progress of concurrent chemoradiotherapy in patients with locally advanced non‐small cell lung cancer prior to the approval of durvalumab oleh Tomoya Fukui, Shinji Hosotani, Itaru Soda, Takahiro Ozawa, Seiichiro Kusuhara, Mikiko I. Kakegawa, Masashi Kasajima, Yasuhiro Hiyoshi, Satoshi Igawa, Masanori Yokoba, Hisashi Mitsufuji, Masaru Kubota, Masato Katagiri, Jiichiro Sasaki, Hiromichi Ishiyama, Katsuhiko Naoki