title: The double edge of knowledge.
authors.forename: D M
authors.initials: DM
authors.lastname: Berwick
mesh_terms: D001026:Coronary Artery Bypass / Q000401:mortality*; D013502:General Surgery / Q000706:statistics & numerical data; D006801:Humans; D009511:New England / Q000453:epidemiology; D010043:Outcome and Process Assessment, Health Care; D015143:Philadelphia / Q000453:epidemiology