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Recovery of cardiac function (left ventricular ejection fraction [LVEF]) in patients with congestive heart failure. (A) No. of patients in arm A = 6; (B) arm B = 19; (C) arm C = 20. Bolded lines represent the average LVEF levels of all patients in each arm through time, and nonbolded lines in each arm represent the LVEF level of an individual patient through time.
