%0 Journal Article %A M. Thomeer %T External validity of randomised controlled trials in idiopathic pulmonary fibrosis %D 2006 %R 10.1183/09031936.06.00151305 %J European Respiratory Journal %P 1072-1072 %V 27 %N 5 %U https://erj.ersjournals.com/content/erj/27/5/1072.1.full.pdf