RT Journal Article SR Electronic T1 Raised troponin levels in COPD: a possible mechanism JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 894 OP 894 DO 10.1136/heartjnl-2013-303665 VO 99 IS 12 A1 Matthew M Orde YR 2013 UL http://heart.bmj.com/content/99/12/894.2.abstract AB