Intravenous cyclophosphamide in acute exacerbation of rheumatoid arthritis-related interstitial lung disease: A propensity-matched analysis using a nationwide inpatient database., Nakamura Kaito;Ohbe Hiroyuki;Ikeda Kei;Uda Kazuaki;Furuya Hiroki;Furuta Shunsuke;Nakajima Mikio;Sasabuchi Yusuke;Matsui Hiroki;Fushimi Kiyohide;Yasunaga Hideo;Nakajima Hiroshi, 51, 5(977), 982, 13 Jul. 2021