title: Sound arguments, true premises, and valid conclusions.
authors.affiliation: Division of Cardiac Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Mass. Electronic address: tsundt@mgh.harvard.edu.
authors.forename: Thoralf M
authors.initials: TM
authors.lastname: Sundt
mesh_terms: D001014:Aortic Aneurysm / Q000601:surgery*; D001021:Aortic Valve / Q000002:abnormalities* / Q000601:surgery; D000082882:Bicuspid Aortic Valve Disease; D019917:Blood Vessel Prosthesis Implantation / Q000592:standards*; D006348:Cardiac Surgical Procedures / Q000592:standards*; D005260:Female; D019983:Guideline Adherence / Q000592:standards*; D006349:Heart Valve Diseases / Q000601:surgery*; D006801:Humans; D008297:Male; D017410:Practice Guidelines as Topic / Q000592:standards*