RT Journal Article SR Electronic T1 Anticoagulation therapy in an elderly woman with atrial fibrillation JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 561 OP 566 VO 68 IS 6 A2 Longworth, David L. A2 Stoller, James K. A1 Marschalk, Angela A1 Messinger-Rapport, Barbara J. YR 2001 UL http://www.ccjm.org/content/68/6/561.abstract AB