Acute exacerbation in rheumatoid arthritis-associated interstitial lung disease: a retrospective case control study
Hironao Hozumi, Yutaro Nakamura, Takeshi Johkoh, Hiromitsu Sumikawa, Thomas V Colby, Masato Kono, Dai Hashimoto, Noriyuki Enomoto, Tomoyuki Fujisawa, Naoki Inui, Takafumi Suda, Kingo Chida
BMJ Open Sep 2013, 3 (9) e003132; DOI: 10.1136/bmjopen-2013-003132