Challenge to CCUs.
D003325:Coronary Care Units; D003362:Cost-Benefit Analysis; D005069:Evaluation Studies as Topic; D006699:Home Care Services; D006805:Human Experimentation; D006801:Humans; D009203:Myocardial Infarction / Q000401:mortality*; D011897:Random Allocation; D006113:United Kingdom; D014481:United States