10.1371/journal.pone.0136160.g005 Carlos Aravena Carlos Aravena Gonzalo Labarca Gonzalo Labarca Carmen Venegas Carmen Venegas Alex Arenas Alex Arenas Gabriel Rada Gabriel Rada Comparison 3. Public Library of Science 2015 systematic review rr literature search mortality function tests quality assessment fvc 5 RCTs ipf data extraction benefit findings table decades pirfenidone pirfenidone treatment exacerbation Idiopathic Pulmonary Fibrosis collagen production decline progression outcome ic GRADE approach pfs language restriction 2015-08-26 03:14:57 Figure https://plos.figshare.com/articles/figure/_Comparison_3_/1522963 <p>Change on Progression-free Survival (PFS).</p>