Figure 5
From: Clinical trials in systemic sclerosis: lessons learned and outcomes
Association between severity of PF and survival in patients with SSc. FVC, forced vital capacity; PF, pulmonary fibrosis; SSc, systemic sclerosis. Reproduced with permission from Steen et al. Arthritis Rheum 1994 © John Wiley & Sons/American College of Rheumatology [28].