Objective:To investigate the effect and safety of low-dose metroprol in treating patients with congestive heart failure(CHF) secondary to dilated cardiomyopathy (DCM).
目的：评价小剂量倍他乐克治疗晚期扩张性心肌病（DCM ）的疗效及安全性。
Objective:To investigate the effect and safety of low-dose metroprol in treating patients with congestive heart failure(CHF) secondary to dilated cardiomyopathy (DCM).
目的：评价小剂量倍他乐克治疗晚期扩张性心肌病（DCM ）的疗效及安全性。
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