Pechirra, P., Gonçalves, P., Conde, P., Nunes, B. and Guiomar, R. 2012. National Influenza Surveillance Programme: Results of Influenza Activity in Portugal in the 2010/2011 Season. Acta Médica Portuguesa. 25, 5 (Nov. 2012), 277–287. DOI:https://doi.org/10.20344/amp.286.