Mortality (2) Patients (2) Evaluation (2) tissu (corporel) (1) sécurité (1) substitution (1) mortalité (1) analyse (1) évolution (1) évaluation (1) comparaison (1) point (1) liberté (1) survie (1) Intercession (1) Deterioration (1) Preservation (1) Comparison (1) Pruning (1) Complications (1) Animal models (1) Methods (1) Valves (1) Swine (1) Survival (1) Spleen (1) Sheep (1) Risk (1) Reason (1) Process (Law) (1)