Effectiveness of influenza vaccination in the Brazilian context a comparative analysis of the program in the Northeast and South of the country
Janessa de Fátima Morgado de Oliveira José Leopoldo Ferreira Antunes; Eliseu Alves Waldman; The IEA-EEF European Congress of Epidemiology 2012 (2012 Porto)
European Journal of Epidemiology Dordrecht v. 27, suppl. 1, p. S108, res. P1H0, 2012Dordrecht 2012
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