Inter- and Intravein Differences in Cardiac Output with Cardiac Resynchronization Pacing using a Multipolar LV Pacing Lead. - JONES, MICHAEL A.; KHIANI, RAJ; FOLEY, PAUL; WEBSTER, DAVID; QURESHI, NORMAN; WONG, KELVIN C.K.; RAJAPPAN, KIM; BASHIR, YAVER; BETTS, TIMOTHY R. (Pacing & Clinical Electrophysiology, 2015)