<qa>  What is the name of the group 2 patients with pacemakers?Group 2 DCM patients with pacemakers: One echo will be performed at baseline prior to biventricular pacemaker implantation, 14 days after admission or at discharge from the hospital whichever comes first following biventricular pacemaker implantation, 2 weeks, 1 month, 3 months, 6 months, 9 months and 12 months 2 weeks after biventricular pacemaker implantation. 