RT Journal Article SR Electronic T1 An active solution to a slippery problem: implanting CRT-D via a persistent left SVC JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 756 OP 756 DO 10.1136/heartjnl-2011-301460 VO 98 IS 9 A1 Peter Swoboda A1 Hazel White A1 Muzahir Hassan Tayebjee YR 2012 UL http://heart.bmj.com/content/98/9/756.abstract AB