PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/thoraxjnl-2013-203828corr1 DP - 2015 Jul 01 TA - Thorax PG - 708--708 VI - 70 IP - 7 4099 - http://thorax.bmj.com/content/70/7/708.short 4100 - http://thorax.bmj.com/content/70/7/708.full SO - Thorax2015 Jul 01; 70