Correction: Risk factors associated with severe outcomes in adult hospitalized patients according to influenza type and subtype

by Ana Martínez, Núria Soldevila, Arantxa Romero-Tamarit, Núria Torner, Pere Godoy, Cristina Rius, Mireia Jané, Àngela Domínguez and the Surveillance of Hospitalized Cases of Severe Influenza in Catalonia Working Group