PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/thoraxjnl-2013-204457.180corr1 DP - 2014 Jan 01 TA - Thorax PG - 98--98 VI - 69 IP - 1 4099 - http://thorax.bmj.com/content/69/1/98.short 4100 - http://thorax.bmj.com/content/69/1/98.full SO - Thorax2014 Jan 01; 69