title: Quality of valve prostheses: are we treating our patients well in the Brazilian National Health System?
authors.forename: Walter J
authors.initials: WJ
authors.lastname: Gomes
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D019918:Heart Valve Prosthesis Implantation / Q000401:mortality*; D006801:Humans; D019106:Postoperative Hemorrhage / Q000453:epidemiology*