RT Journal Article SR Electronic T1 Correction JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 262 OP 262 DO 10.1136/thoraxjnl-2016-209333.101corr1 VO 72 IS 3 YR 2017 UL http://thorax.bmj.com/content/72/3/262.abstract AB