@article{:/content/10.2807/ese.15.38.19667-en, author = "Santa-Olalla Peralta, P and Cortes-García, M and Vicente-Herrero, M and Castrillo-Villamandos, C and Arias-Bohigas, P and Pachon-del Amo, I and Sierra-Moros, M J and on behalf of the Surveillance Group for New Influenza A(H1N1) Virus Investigation and Control Team in Spain", title = "Risk factors for disease severity among hospitalised patients with 2009 pandemic influenza A (H1N1) in Spain, April – December 2009", journal = "Eurosurveillance", year = "2010", volume = "15", number = "38", eid = 19667, pages = "", url = "https://www.eurosurveillance.org/content/10.2807/ese.15.38.19667-en", doi = "https://doi.org/10.2807/ese.15.38.19667-en" }