RT Journal Article SR Electronic T1 “Safety of nintedanib added to pirfenidone treatment for idiopathic pulmonary fibrosis.” Kevin R. Flaherty, Charlene D. Fell, J. Terrill Huggins, Hilario Nunes, Robert Sussman, Claudia Valenzuela, Ute Petzinger, John L. Stauffer, Frank Gilberg, Monica Bengus and Marlies Wijsenbeek. Eur Respir J 2018; 52: 1800230. JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1850230 DO 10.1183/13993003.50230-2018 VO 52 IS 4 YR 2018 UL http://erj.ersjournals.com/content/52/4/1850230.abstract AB