No abstract available
MeSH terms
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Aged
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Humans
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Outcome Assessment, Health Care*
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Pneumococcal Infections / prevention & control
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Pneumococcal Vaccines / therapeutic use*
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Polysaccharides, Bacterial / therapeutic use*
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Quality of Health Care*
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Spleen / physiopathology*
Substances
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Pneumococcal Vaccines
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Polysaccharides, Bacterial