%0 Journal Article %A Santa-Olalla Peralta, P %A Cortes-García, M %A Vicente-Herrero, M %A Castrillo-Villamandos, C %A Arias-Bohigas, P %A Pachon-del Amo, I %A Sierra-Moros, M J %A on behalf of the Surveillance Group for New Influenza A(H1N1) Virus Investigation and Control Team in Spain %T Risk factors for disease severity among hospitalised patients with 2009 pandemic influenza A (H1N1) in Spain, April – December 2009 %D 2010 %J Eurosurveillance %V 15 %N 38 %P 19667 %R doi:https://doi.org/10.2807/ese.15.38.19667-en %K novel influenza A(H1N1) %K A(H1N1)v %K H1N1 %K pandemic %K influenza %K swine flu %K swine influenza %U https://www.eurosurveillance.org/content/10.2807/ese.15.38.19667-en