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Abstract
Entities: Disease
Mesh: See more » Global HealthHealth PrioritiesHumansPoliomyelitis/epidemiologyPoliomyelitis/prevention & controlPopulation SurveillanceVaccinationWorld Health Organization/organization & administration
Year: 1997 PMID: 9274135
Source DB: PubMed Journal: Wkly Epidemiol Rec ISSN: 0049-8114