Mobile coronary care--a controversial innovation.
D000368:Aged; D000552:Ambulances / Q000706:statistics & numerical data*; D003327:Coronary Disease / Q000401:mortality / Q000628:therapy*; D004630:Emergencies; D006760:Hospitalization; D006801:Humans; D007362:Intensive Care Units; D009203:Myocardial Infarction / Q000628:therapy; D014481:United States