title: The only constant is change: the necessity of serial prehospital 12-lead ECGs.
authors: Tim
authors: T
authors: Phalen
mesh_terms: D004562:Electrocardiography / Q000295:instrumentation*; D004632:Emergency Medical Services; D006801:Humans; D007511:Ischemia / Q000175:diagnosis / Q000209:etiology; D009203:Myocardial Infarction / Q000175:diagnosis; D014481:United States