RT Journal Article SR Electronic T1 Heart: technology and guidelines JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 785 OP 785 DO 10.1136/hrt.2007.119149 VO 93 IS 7 A1 L Ceri Davies YR 2007 UL http://heart.bmj.com/content/93/7/785.abstract AB