title: How risky is heart-valve replacement?
mesh_terms: D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000150:complications / Q000601:surgery; D006349:Heart Valve Diseases / Q000150:complications / Q000601:surgery; D019918:Heart Valve Prosthesis Implantation / Q000401:mortality*; D006801:Humans