When to operate in aortic valve disease.
D000367:Age Factors; D001022:Aortic Valve Insufficiency / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000601:surgery*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D010710:Phosphates / Q000032:analysis
D010710:Phosphates