@misc{misc573ab00b,
title   = {Effectiveness of influenza vaccination in the Brazilian context: a comparative analysis of the program in the Northeast and South of the country},
author = {Oliveira, Janessa de Fátima Morgado de and Antunes, José Leopoldo Ferreira and Waldman, Eliseu Alves},
year = {2012},
booktitle   = {The IEA-EEF European Congress of Epidemiology 2012}
}