RT Journal Article SR Electronic T1 β Blockade in congestive heart failure JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1 DO 10.1136/hrt.79.2008.1S VO 79 IS suppl 2 A1 W J Remme YR 1998 UL http://heart.bmj.com/content/79/suppl_2/1.abstract AB