RT Journal Article SR Electronic T1 Authors' reply JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 179 OP 180 DO 10.1136/thx.2010.149658 VO 66 IS 2 A1 He, Jian-Qing A1 Akhabir, Loubna A1 Sin, Don D A1 Man, S F Paul A1 Paré, Peter D A1 Sandford, Andrew J A1 Foreman, Marilyn G A1 DeMeo, Dawn L A1 Silverman, Edwin K YR 2011 UL http://thorax.bmj.com/content/66/2/179.2.abstract AB