RT Journal Article SR Electronic T1 Effect of pirfenidone on breathlessness in patients with idiopathic pulmonary fibrosis JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1900399 DO 10.1183/13993003.00399-2019 A1 Marilyn K. Glassberg A1 Marlies S. Wijsenbeek A1 Frank Gilberg A1 Ute Petzinger A1 Klaus-Uwe Kirchgaessler A1 Carlo Albera YR 2019 UL http://erj.ersjournals.com/content/early/2019/05/16/13993003.00399-2019.abstract AB