title: Double counting of acute myocardial infarction makes estimates of occurrence and case fatality inaccurate.
authors.forename: John M
authors.initials: JM
authors.lastname: Westfall
mesh_terms: D000367:Age Factors; D015982:Bias; D003625:Data Collection / Q000706:statistics & numerical data; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D009203:Myocardial Infarction / Q000401:mortality*; D010360:Patient Transfer / Q000706:statistics & numerical data; D014481:United States