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. 2015 May 19;2015:151626. doi: 10.1155/2015/151626

Figure 1.

Figure 1

Study flow chart. RA: rheumatoid arthritis; RA-ILD: rheumatoid arthritis with interstitial lung disease; PFT: pulmonary function tests; HRCT: high-resolution computed tomography; FVC: forced vital capacity; anti-CCP: anti-cyclic citrullinated peptide antibodies; ESR: erythrocyte sedimentation rate.