PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/thx.2009.124776corr1 DP - 2010 Sep 01 TA - Thorax PG - 844--844 VI - 65 IP - 9 4099 - http://thorax.bmj.com/content/65/9/844.2.short 4100 - http://thorax.bmj.com/content/65/9/844.2.full SO - Thorax2010 Sep 01; 65