RT Journal Article SR Electronic(1) A1 Sala, M R A1 Arias, C A1 Oliva, J M A1 Pedrol, A A1 Roura, P A1 Domínguez, A YR T1 JF VO OP UL https://www.eurosurveillance.org/content/10.2807/esm.12.03.00691-fr