RT Journal Article SR Electronic T1 The role of cigarette smoking-derived pollutants in the risk of mortality in idiopathic pulmonary fibrosis JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2101739 DO 10.1183/13993003.01739-2021 VO 58 IS 3 A1 Hee-Young Yoon A1 Sun-Young Kim A1 Ok-Jin Kim A1 Jin Woo Song YR 2021 UL http://erj.ersjournals.com/content/58/3/2101739.abstract AB