Pneumococcal vaccine and the elderly.
Stone
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D000368:Aged; D001428:Bacterial Vaccines; D006291:Health Policy; D006299:Health Services for the Aged; D006801:Humans; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D006113:United Kingdom; D014481:United States
D001428:Bacterial Vaccines; D022242:Pneumococcal Vaccines