RT Journal Article SR Electronic T1 Correction JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 905 OP 905 DO 10.1136/thx.2007.089193corr2 VO 70 IS 9 YR 2015 UL http://thorax.bmj.com/content/70/9/905.abstract AB