title: Searching for the right "keyhole" in heart surgery.
authors.forename: S
authors.initials: S
authors.lastname: Campbell
mesh_terms: D001803:Blood Transfusion; D006348:Cardiac Surgical Procedures / Q000191:economics / Q000379:methods / Q000639:trends*; D003363:Cost Control; D003362:Cost-Benefit Analysis; D006801:Humans; D019060:Minimally Invasive Surgical Procedures / Q000009:adverse effects; D014481:United States; D014486:United States Food and Drug Administration