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Surveillance for severe acute respiratory infections (SARI) in hospitals in the WHO European region - an exploratory analysis of risk factors for a severe outcome in influenza-positive SARI cases

Crossref DOI link: https://doi.org/10.1186/s12879-014-0722-x

Published Online: 2015-01-08

Published Print: 2015-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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