RT Journal Article SR Electronic T1 eHEART: www.heartjnl.com JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 833 OP 833 DO 10.1136/heart.89.8.833 VO 89 IS 8 YR 2003 UL http://heart.bmj.com/content/89/8/833.abstract AB