Title: Cardiac resynchronization therapy
Subjects: Methods, Congestive Heart Failure, Artificial Cardiac Pacing, Implantable cardioverter-defibrillators, Therapy, Congestive heart failure, Implantable Defibrillators, Cardiac pacing, Artificial Pacemaker, Congenital heart disease, Heart failure, Defibrillators, Pacemaker, artificial (heart), Heart Failure