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Abstract
Entities: Disease
Mesh: See more » CertificationCommunicable Disease Control/organization & administrationEurope/epidemiologyGlobal HealthHumansPoliomyelitis/epidemiologyPoliomyelitis/prevention & control
Year: 2002 PMID: 12125241
Source DB: PubMed Journal: Wkly Epidemiol Rec ISSN: 0049-8114