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In page Coronary care unit:

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These developments led to an interest in intensive care for myocardial infarction. In 1967, Thomas Killip and John Kimball published a report of 250 patients with acute MI's, who had experienced significantly better survival rates in CCUs compared to other institutions. This, along with other reports, led to an increase in coronary care units. Now catheterization units are commonplace in large cities.[citation needed]