Columbia subject headings:
Human experimentation in medicine--Moral and ethical aspects.
Medical care--Law and legislation--United States.
Medical ethics--United States.
Medical ethics.
National health services--United States.
United States. Department of Health, Education, and Welfare.
Harvard subject headings:
Human experimentation in medicine--Moral and ethical aspects
Medical care--Law and legislation--United States
Medical ethics--United States
Medical ethics.
National health services--United States.
United States. Department of Health, Education, and Welfare
Princeton subject headings: