Syndromic surveillance of influenza activity in Sweden: an evaluation of three tools
MA, T. ; ENGLUND, H. ; BJELKMAR, P. ; WALLENSTEN, A. ; HULTH, A.
Epidemiology and infection, 2015-08, Vol.143 (11), p.2390-2398 [Periódico revisado por pares]Cambridge, UK: Cambridge University Press
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