title: Letter by Varma regarding article, "Bundle-branch block morphology and other predictors of outcome after cardiac resynchronization therapy in medicare patients".
authors.forename: Niraj
authors.initials: N
authors.lastname: Varma
mesh_terms: D002037:Bundle-Branch Block / Q000401:mortality*; D017147:Defibrillators, Implantable; D006801:Humans; D008297:Male; D012042:Registries