Columbia subject headings:
Medical economics--United States.
Medicine--United States--Societies, etc.--Political activity.
Pressure groups--United States.
Harvard subject headings:
Medical economics--United States.
Medicine--Societies, etc.--Political activity--United States.
Medicine--United States--Societies, etc.--Political activity.
Pressure groups--United States
Princeton subject headings:
Medical economics--United States.
Medicine--United States--Societies, etc.--Political activity.
Pressure groups--United States.