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Coronary Artery Bypass
Heart Valve Prosthesis Implantation
New England
Prospective Studies
Risk Factors
Multivariate Analysis
Survival Analysis
Treatment Outcome
Cohort Studies
Incidence
Survival Rate
Time Factors
Risk Assessment
Hospital Mortality
Logistic Models
Coronary Disease
Stroke
Heart Failure
Aortic Valve
Life Tables
Co-Publications
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