RT Journal Article SR Electronic T1 Correction JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1609 OP 1609 DO 10.1136/heartjnl-2011-300198.15corr1 VO 98 IS 21 YR 2012 UL http://heart.bmj.com/content/98/21/1609.1.abstract AB