RT Journal Article SR Electronic T1 NO: COPD and beyond JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 16 DO 10.1136/thx.52.2008.S16 VO 52 IS suppl 3 A1 AT Jones A1 TW Evans YR 1997 UL http://thorax.bmj.com/content/52/suppl_3/16.abstract AB