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Abstract
Entities: Species
Mesh: See more » Global HealthHistory, 20th CenturyHumansSmallpox/epidemiologySmallpox/history
Year: 1997 PMID: 9380013
Source DB: PubMed Journal: MMWR Morb Mortal Wkly Rep ISSN: 0149-2195 Impact factor: 17.586