Columbia subject headings:
Medical economics--United States.
Medical economics.
Medicine, Preventive--Cost effectiveness.
Medicine, Preventive--Evaluation.
Medicine, Preventive--United States--Cost effectiveness.
Medicine, Preventive--United States--Evaluation.
Harvard subject headings:
Medical economics--United States.
Medical economics.
Medicine, Preventive--Cost effectiveness.
Medicine, Preventive--Evaluation.
Medicine, Preventive--United States--Cost effectiveness.
Medicine, Preventive--United States--Evaluation.
Princeton subject headings:
Medical economics--United States.
Medical economics.
Medicine, Preventive--Cost effectiveness.
Medicine, Preventive--Evaluation.
Medicine, Preventive--United States--Cost effectiveness.
Medicine, Preventive--United States--Evaluation.