RT Journal Article SR Electronic(1) A1 Pozio, E A1 Sacchini, D A1 Boni, P A1 Tamburrini, A A1 Alberici, F A1 Paterlini, F YR T1 JF VO OP UL https://www.eurosurveillance.org/content/10.2807/esm.03.08.00119-fr