substitution (1) âge (1) index (1) Surgery (1) Methods (1) Year (1) Echocardiography (1) Surgery (1) Speed (1) Progress (1) Prognosis (1) Patients (1) Natural history (1) Men (1) Mass (1) Magnetic resonance imaging (1) Magnetic resonance (1) Hypertrophy (1) Gadolinium (1) Evidence (1) Change (1) Aortic valve--Stenosis (1) Age (1) Methods (1) Stenosis (1) Fibrosis (1) Age (1) Speed (1) Prognosis (1) Patients (1)