RT Journal Article SR Electronic T1 eHEART:www.heartjnl.com JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 590 OP 590 DO 10.1136/heart.89.6.590 VO 89 IS 6 YR 2003 UL http://heart.bmj.com/content/89/6/590.abstract AB