RT Journal Article SR Electronic T1 Interstitial lung disease guideline JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP v1 OP v58 DO 10.1136/thx.2008.101691 VO 63 IS Suppl 5 A1 Wells, A U A1 Hirani, N YR 2008 UL http://thorax.bmj.com/content/63/Suppl_5/v1.abstract AB