RT Journal Article SR Electronic T1 Heart in the 21st century JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1 OP 2 DO 10.1136/heart.83.1.1 VO 83 IS 1 A1 ROGER HALL YR 2000 UL http://heart.bmj.com/content/83/1/1.abstract AB