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Abstract
Entities: Species
Mesh: See more » China/epidemiologyHumansImmunizationInfantMalePoliomyelitis/epidemiologyPoliomyelitis/prevention & controlPoliomyelitis/virologyPopulation Surveillance
Year: 2000 PMID: 11265275
Source DB: PubMed Journal: Wkly Epidemiol Rec ISSN: 0049-8114