risque (1) substitution (1) besoin (1) mortalité (1) gestion (1) maladie (1) jeune (1) Mortality (1) Reoperation (1) Rates (1) Young adults (1) Risk (1) Population (1) Patients (1) Mortality (1) Meta-analysis (1) Management (1) Heart valve prosthesis (1) Clinical trials (1) Aortic valve (1) Management (1) Reoperation (1) Rates (1) Population (1) Patients (1) maladie (1)