société (humaine) (1) sécurité (1) risque (1) substitution (1) âge (1) taux (1) Death (1) Rates (1) Thoracic surgeons (1) Risk (1) Patients (1) Hemorrhage (1) Heart (1) Death (1) Cerebrovascular disease (1) Aortic valve--Stenosis (1) Aortic valve insufficiency (1) Aortic valve (1) Age (1) Age (1) Rupture (1) Rates (1) Patients (1) mort (1)