Columbia subject headings:
Medicine, Preventive--Research--United States.
Medicine--Research--United States.
National Institutes of Health (U.S.)--Appropriations and expenditures.
Harvard subject headings:
Medicine, Preventive--Research--United States.
Medicine--Research--United States
National Institutes of Health (U.S.)--Appropriations and expenditures.
Princeton subject headings:
Medicine, Preventive--Research--United States.
Medicine--Research--United States.
National Institutes of Health (U.S.)--Appropriations and expenditures.