RT Journal Article SR Electronic T1 eHEART: www.heartjnl.com JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 90 OP 90 DO 10.1136/heart.83.1.90 VO 83 IS 1 YR 2000 UL http://heart.bmj.com/content/83/1/90.abstract AB