Nintedanib administration after the onset of acute exacerbation of interstitial lung disease in the real world oleh Motoyasu Kato, Shinichi Sasaki, Wataru Mori, Makiko Kohmaru, Takashi Akimoto, Eri Hayakawa, Soichiro Soma, Yuta Arai, Naho Sakamoto Matsubara, Shun Nakazawa, Takuto Sueyasu, Haruki Hirakawa, Hiroaki Motomura, Issei Sumiyoshi, Yusuke Ochi, Junko Watanabe, Kazuaki Hoshi, Kotaro Kadoya, Hiroaki Ihara, Jia Hou, Shinsaku Togo, Kazuhisa Takahashi