A nosocomial outbreak of influenza during a period without influenza epidemic activity.
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Horcajada JP, et al. Among authors: martinez ja.
Eur Respir J. 2003 Feb;21(2):303-7. doi: 10.1183/09031936.03.00040503.
Eur Respir J. 2003.
PMID: 12608445
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