(Q39398158)
Statements
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Low vaccination levels of US preschool and school-age children. Retrospective assessments of vaccination coverage, 1991-1992. (English)
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E R Zell
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V Dietz
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J Stevenson
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S Cochi
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R H Bruce
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1 March 1994
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271
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11
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833-839
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Identifiers
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