Cardiac resynchronization therapy delivered via a multipolar left ventricular lead is associated with reduced mortality and elimination of phrenic nerve stimulation: long-term foll... by Behar, JM, Bostock, J, Zhu Li, AP, Chin, HMS, Jubb, S, Lent, E, Gamble, J, Foley, PWX, Betts, TR, Rinaldi, CA, Herring, N