Columbia subject headings:
Clinical medicine--United States--Classification.
Diagnosis related groups--United States--Data processing.
Hospital patients--United States--Classification--Data processing.
Hospital utilization--United States--Data processing.
Harvard subject headings:
Clinical medicine--United States--Classification.
Diagnosis related groups--United States--Data processing.
Hospital patients--United States--Classification--Data processing.
Hospital utilization--United States--Data processing.
Princeton subject headings:
Clinical medicine--United States--Classification.
Diagnosis related groups--United States--Data processing.
Hospital patients--United States--Classification--Data processing.
Hospital utilization--United States--Data processing.