1. The epidemiology of rheumatoid arthritis;Gabriel;Rheum Dis Clin North Am,2001
2. [2] Bharadwaj A, Haroon N. Interstitial lung disease and neuropathy as predominant extra - articular manifestations in patients with rheumatoid arthritis : a prospective study. Med Sci Monit 2005;11(10):CR498-CR502.
3. [3] Suzuki A, Ohosone Y, Obana M, et al. Cause of death in 81 autopsied patients with rheumatoid arthritis. J Rheumatol 1994;21(1):33-6.
4. Incidence and mortality of interstitial lung disease in rheumatoid arthritis: a population-based study;Bongartz;Arthritis and Rheumatism,2010
5. Rheumatoid arthritis-related lung diseases: CT findings;Tanaka;Radiology,2004