(Q51653993)
Statements
Heterogeneous case definitions used for the surveillance of influenza in Europe. (English)
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Aguilera JF
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Paget WJ
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Mosnier A
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Heijnen ML
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Uphoff H
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van der Velden J
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Vega T
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Watson JM
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1 January 2003
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18
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8
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751-754
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