The European Respiratory Journal article-version (VoR) Version of Record Simpson, T, Barratt, S L, Beirne, P, Chaudhuri, N, Crawshaw, A, Crowley, L E, Fletcher, S, Gibbons, M A, Hallchurch, P, Horgan, L, Jakaityte, I, Lewis, T, McLellan, T, Myall, K J, Miller, R, Smith, D J F, Stanel, S, Thillai, M, Thompson, F, Wallis, T, Wu, Z, Molyneaux, P L & West, A G 2021, ' The burden of Progressive Fibrotic Interstitial lung disease across the UK ', The European respiratory journal, vol. 58, no. 1, 2100221 . https://doi.org/10.1183/13993003.00221-2021