title: For LV pacing, four is greater than two.
authors.affiliation: Lahey Hospital & Medical Center, Burlington, MA, USA; Baim Institute for Clinical Research, Boston, MA, USA. Electronic address: matthew.r.reynolds@lahey.org.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Reynolds
authors.affiliation: Lahey Hospital & Medical Center, Burlington, MA, USA.
authors.forename: Kashif N
authors.initials: KN
authors.lastname: Chaudhry