RT Journal Article SR Electronic T1 Atrial fibrillation: When is rate control enough? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 713 OP 718 VO 71 IS 9 A1 Saad, Eduardo B. A1 Schweikert, Robert A. YR 2004 UL http://www.ccjm.org/content/71/9/713.abstract AB