Cooperative study on cardiac catheterization. Data acquisition and handling.
D006328:Cardiac Catheterization / Q000401:mortality; D006784:Hospitals, Teaching; D006801:Humans; D007255:Information Services; D007256:Information Systems; D007753:Laboratories; D009316:National Institutes of Health (U.S.); D011676:Punched-Card Systems; D012577:Schools, Medical; D013223:Statistics as Topic; D014481:United States