risque (1) substitution (1) mortalité (1) laboratoire (1) analyse (1) procès (1) Mortality (1) Surgery (1) Treatment (1) Death (1) Methods (1) Year (1) Ci (Chinese poetry) (1) Surgery (1) Risk (1) Proportion (1) Population (1) Patients (1) Mortality (1) Finance (1) Death (1) Day (1) Aortic valve--Stenosis (1) Aortic valve insufficiency (1) Aortic valve (1) Methods (1) Analysis (1) Population (1) Patients (1) Interpretation (1)