血清氮端脑钠肽水平在老年慢性心力衰竭患者左心功能评估中的价值
혈청담단뇌납태수평재노년만성심력쇠갈환자좌심공능평고중적개치
Value of serum N terminal brain natriuretic peptide level on left ventricular function assessment of elderly patients with chronic heart failure in patients
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