RT Journal Article SR Electronic T1 Complex ventricular arrhythmias: a therapeutic nightmare JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 723 OP 728 DO 10.1136/hrt.2008.163337 VO 96 IS 9 A1 Antonio Berruezo YR 2010 UL http://heart.bmj.com/content/96/9/723.abstract AB