[Cardiac operations with artificial circulation in elderly patients: risk factors, prognosis].
Olofinskaia
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IE
D000368:Aged; D001022:Aortic Valve Insufficiency / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000639:trends*; D004493:Education; D006801:Humans; D011379:Prognosis; D012307:Risk Factors