Columbia subject headings:
Immunization--United States.
Vaccination--United States.
Harvard subject headings:
Medical policy--United States
Pharmaceutical policy--United States
Pneumococcal vaccine--United States.
Pneumonia, Pneumococcal--Vaccination--United States--Cost effectiveness.
Vaccination--Complications--United States.
Vaccination--United States
Vaccines industry--United States.
Vaccines--Research--United States.
Princeton subject headings:
Medical policy--United States.
Pharmaceutical policy--United States.
Pneumococcal vaccine--United States.
Pneumonia, Pneumococcal--Vaccination--United States--Cost effectiveness.
Vaccination--Complications--United States.
Vaccination--United States.
Vaccines industry--United States.
Vaccines--Research--United States.