RT Journal Article SR Electronic T1 CORRECTION JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 274 OP 274 DO 10.1136/thx.2005.029561corr1 VO 61 IS 3 YR 2006 UL http://thorax.bmj.com/content/61/3/274.2.abstract AB