No abstract available
MeSH terms
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Adolescent
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Child
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Child, Preschool
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Female
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Humans
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Infant
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Male
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Poliomyelitis / mortality*
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Poliomyelitis / prevention & control
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Poliovirus Vaccine, Inactivated / therapeutic use*
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Poliovirus Vaccine, Oral / therapeutic use*
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Spain
Substances
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Poliovirus Vaccine, Inactivated
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Poliovirus Vaccine, Oral