Seasonal Influenza Virus Species in Patient Swab Samples Analyzed for the Presence of the Pandemic (H1N1) 2009 Influenza Virus |
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Authors: | Jens Verheyen Melanie Balduin Rolf Kaiser Herbert Pfister |
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Affiliation: | Institute of Virology University of Cologne Fürst-Pückler Str. 56 50935 Cologne, Germany |
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