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Six‐minute walking distance (6MWD) in PATENT‐2.41 (A) 6MWD in the overall population, and treatment‐naïve and pretreated subgroups of PATENT‐2. Graph shows mean ± standard error of the mean. (B) Kaplan–Meier analysis showing the association of 6MWD with survival based on median value at baseline. (C) Kaplan–Meier analysis showing the association of 6MWD with survival at follow‐up. Reprinted with permission from Elsevier from Ghofrani et al.41
