左心室收缩功能正常的老年冠心病患者无保护左主干病变PCI治疗预后的影响因素
좌심실수축공능정상적노년관심병환자무보호좌주간병변PCI치료예후적영향인소
Factors influencing prognosis in percutaneous coronary intervention for unprotected left main coronary disease in elderly coronary heart disease patients with normal left ventricular systolic function
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