Relationship of Beta-Blocker Dose With Outcomes in Ambulatory Heart Failure Patients With Systolic Dysfunction : Results From the HF-ACTION (Heart Failure: A Controlled Trial Investigating Outcomes of Exercise Training) Trial
? Duke University and the Duke Clinical Research Institute, Durham, North Carolina;† Wake Forest University, Winston-Salem, North Carolina;‡ National Heart, Lung, and Blood Institute, Bethesda, Maryland;§ Henry Ford Hospital, Detroit, Michigan;∥ Montefiore Einstein Center for Heart and Vascular Care, Bronx, New York;¶ Thomas Jefferson University, Philadelphia, Pennsylvania
